62results about How to "Snowmelt fast" patented technology

The invention discloses a low-corrosion and high-efficiency chlorine salt deicing agent, which is prepared from the following raw materials in percentage by mass: 85%-98% of sodium chloride, 1%-10% of a corrosion inhibitor and 1%-5% of an adjuvant, wherein the corrosion inhibitor is prepared from sodium silicate, disodium hydrogen phosphate, sodium tartrate and sodium citrate; and the adjuvant is prepared from sodium humate, urea and heteroauxin. Silicate in the corrosion inhibitor disclosed by the invention can form a protective film on the metal surface to avoid corrosion to metal caused by chlorine salt and synergistic effect of disodium hydrogen phosphate and sodium silicate; the corrosion inhibition effect is enhanced; a chemical adsorption layer is formed by coordinated complexation of polar radical of sodium citrate and sodium tartrate donor and a metal surface; a dual-electric layer structure is formed on the metal surface; a drainage layer is formed by nonpolar radical directional arrangement; chemical corrosion of metal is prevented; and the damages to soil and plants can be reduced by urea, sodium humate and heteroauxin. The preparation method disclosed by the invention is simple, mild in condition, available in raw materials, and easy to put into industrial application, and can be carried out under normal temperature and pressure.

The invention discloses a snow melting method for an expressway. The central isolation belt or two sides of the expressway is / are provided with a water pumping device which is connected with a spray appliance which comprises a water pump, a water pipe connected with the water pump, and a nozzle arranged on the water pipe. Wells are built at the central isolation belt or the two sides of the expressway. When it snows, underground water is pumped out by the water pumping device, and the water is transferred to the spray appliance which uniformly sprays the water to cover the road surface, so that the snow is melted by using the underground water. The method is capable of melting snow at quick snow melting speed, without closing down the expressway, without damage on the road surface and without harm to plants and crops at the two sides of the expressway. The method is exceedingly environment-friendly and favorable for being popularized and applied.

The invention relates to a low-corrosion complex chloride snow-melting agent. The calcium chloride and the magnesium chloride are used as a snow-melting main material, the sodium gluconate, zinc salt, amides and polyol compound and glycine betaine are added so as to inhibit the corrosion of a cathode and an anode of a carbon steel; a stable absorption film is formed on the surface of the carbon steel and the concrete so as to effectively reduce the corrosion to the carbon steel and the damage to the concrete; the inhibition rate can be used for achieving more than 80%; and furthermore, the salt-tolerance growing capability of a plant can be effectively improved. The snow-melting agent provided by the invention has low freezing point, can be used at the severe cold area at minus 40 DEG C at the highest, the snow-melting speed is fast, and re-freezing is inhibited; the snow-melting agent is free from phosphorus element and pollution-free, the precipitatin reaction cannot occur between components to influence the performance. The snow-melting agent has the advantages of small damage to a road surface, easily obtained raw materials, and high cost performance; and therefore, the practical applicability is strong and the large-scale use is achieved.

The invention provides an ecological rehabilitation promoting snow-melting agent and a preparation method thereof .The snow-melting agent is prepared from, by mass, 10-30 parts of polyaspartic acid, 30-50 parts of humic acid, 10-30 parts of acetate and 0-20 parts of chlorine salt .Firstly, humic acid is prepared according to the mass proportion, potassium permanganate and 30% hydrogen peroxide are added, and a combined pre-oxidation reaction is conducted; after the combined pre-oxidation reaction is finished, acetate and chlorine salt are added, stirred and dissolved, and the mixture is cooled to room temperature; polyaspartic acid is added, and after the materials are evenly mixed, the mixture is directly contained in a barrel to serve as a liquid snow-melting agent or is sprayed to be prepared into a solid particle snow-melting agent .The snow-melting agent can be used for melting snow and ice, stimulating plant growth and reducing harm of chlorine salt snow-melting agents left in soil to the environment .Besides, biological degradation can be achieved, a preparation process is simple, production cost is low, and the snow-melting agent is suitable for industrial application.

The invention relates to a snow-melting agent, in particular to an environment-friendly snow-melting agent and a preparation method thereof. The environment-friendly snow-melting agent comprises, by weight, 10-60 parts of water, 1-5 parts of ethyl alcohol, 0.3-0.5 part of saccharose, 0.1-1.0 part of isosorbide, 0.1-10 parts of ethanediol, 0.5-50 parts of glycerine, 0.1-1 part of acesulfame, 0.5-5 parts of sodium tripolyphosphate, 0.1-1 part of aspartame, 0.5-1 part of sodium hexametaphosphate, 0.1-30 parts of methyl alcohol and 0.5-1 part of threitol. The snow-melting agent prepared through the method is very high in snow melting efficiency, convenient to transport, safe to use and store, convenient to spray, low in use labor intensity, small in labor cost, small in dosage, high in snow melting speed and free of residues, does not pollute water resources, does not corrode buildings or pavements, does not do harm to plants or aquatic animals, does not destroy the pH value of soil and does not cause salinization of the soil.

The invention discloses an environment-friendly snow quick melting agent. The environment-friendly snow quick melting agent is prepared from 12-65 parts of water, 2-6 parts of ethyl alcohol, 0.5-0.9 part of saccharose, 0.5-1.0 part of isosorbide, 0.2-10 parts of ethanediol, 2-50 parts of glycerol, 0.3-1 part of acesulfame potassium, 2-5 parts of sodium tripolyphosphate, 0.2-1 part of aspartame, 0.5-1 part of sodium hexametaphosphate, 6-30 parts of methyl alcohol, 0.5-1 part of threitol, 14-40 parts of sodium hexametaphosphate, 8-21 parts of sodium silicate, 6-20 parts of zinc dihydrogen phosphate, 5-12 parts of sodium dodecyl benzene sulfonate, 5-20 parts of sodium tartrate, 4-12 parts of hexamine, and 6-13 parts of allyl thiourea. The environment-friendly snow quick melting agent is superhigh in snow melting efficiency, convenient to transport, and safe in use and storage; spraying is convenient, labor intensity is low, and manual work investment is low; the usage amount is small, the snow melting speed is high, no residue is left, pollution to the water source is avoided, corrosion to buildings or road surfaces is avoided, damage to plants or aquatic animals is avoided, damage to the pH of soil is avoided, and soil salinization is avoided.

The invention relates to an environmentally friendly snow melting agent which comprises the following components in percentage by weight: 90-110 percent of calcium chloride, 15-25 percent of urea, 15-25 percent of sodium nitrite, 10-15 percent of potassium sulphate, 22-30 percent of sodium metasilicate and 50-90 percent of carbon black. The environmentally friendly snow melting agent can be used for effectively solving the problems of the traditional snow melting agent used in China on corrosion to metal and cement concrete, damage to plant growth, and the like. The snow melting agent product does not contain sodium chloride, thereby reducing the influences and the damages to roads and environment of ordinary snow melting agents, and has the advantages of high snow melting speed, no corrosion, small feed dose, economy, environmental protection, and the like. Products after melting can be used for promoting the growth of plants, and compared with the traditional products, the snow melting agent has micro corrosion to the metal and the cement concrete and also has safety and reliability; the residual products after snow melting can be used for promoting the growth of the plants so as to realize reutilization; and the snow melting agent is easy to deliquesce, has certain effects of stabilizing soil and controlling dust and good flowability and is easy to scatter and mechanically spread.

The invention relates to a preparation method of a low-carbon environment-friendly snow melting agent, and relates to the field of fermentative hydrogen production and snow melting agents. The snow melting agent is generated through an acid-base neutralization reaction at suitable temperature with commercial calcium carbonate and metabolic products (organic mixed acid) generated when fruit and vegetable waste is subjected to anaerobic fermentative hydrogen production at medium temperature (35-38 DEG C) or high temperature (53-55 DEG C). The product is low in price, convenient to use, free of toxicity and corrosion and biodegradable, has no adverse effect on the growth of plants and is the efficient low-carbon environment-friendly snow melting agent. In addition, a liquid component generated after the operation of a solid-liquid separation unit is a liquid product of the low-carbon environment-friendly snow melting agent; a solid component is a substance containing cellulose, hemicellulose and lignin of calcium phosphate and other mineral fertilizer, serves as a raw material of biochar production and is used for soil improvement.

The invention discloses glass and pumice water-permeable bricks and a production process of the glass and pumice water-permeable bricks. The glass and pumice water-permeable bricks are prepared from the following formula components in percentage by weight: 28 to 36 parts of high-strength cement, 6 to 10 parts of a water permeation agent and 54 to 66 parts of honeycomb glass and pumice particle. The glass and pumice water-permeable bricks have the advantages of light weight, good water permeation property and water retention property, and especially accords with a design concept of current sponge cities; the glass and pumice water-permeable bricks are of an effective product of sponge measures including permeation, retention, accumulation, purification, utilization and exhausting. The glass and pumice water-permeable bricks have the advantages that pollution to the environment is not caused in production and utilization processes and solid wastes of renewable resources are utilized.

The invention discloses a preparation method for a bamboo carbon fiber snow-melting agent, and belongs to the technical field of materials. The preparation method comprises the following steps: using bamboo skin as a raw material, conducting manual linen suction, alkaline solution modification and fermentation to obtain bamboo fiber, carbonizing the bamboo fiber into bamboo carbon fiber, crosslinking the bamboo carbon fiber and acetate through a starch crosslinking agent to obtain a semi-finished product, fully mixing the semi-finished product, zinc dihydrogen phosphate, thiourea and an anti-skidding agent, and bagging the mixture so as to obtain the bamboo carbon fiber snow-melting agent. Examples prove that the operation is simple and feasible, the prepared snow-melting agent is low in cost, the snow-melting effect is obvious, the snow-melting speed is accelerated by 75% or above, the snow-melting agent can degrade by self, and no harm is caused for the water body and environment after the snow is molten.

The invention relates to a ferrite asphalt mixture with a microwave snow melting function and a preparation method and application thereof. The ferrite asphalt mixture comprises the following components in percentage by mass: 85.5-89.5% of coarse and fine aggregates, 2.1%-7.9% of mineral powder; 4.8%-5.3% of asphalt; 3.4%-6.8% of zinc manganese ferrite powder; and 0.01-0.3% of fiber. Asphalt and other mixtures are mixed so that the zinc-manganese ferrite powder is uniformly dispersed in the asphalt mortar and is laid on a roadbed. Compared with the prior art, after the ferrite powder is subjected to microwave heating, microwave electromagnetic energy can be converted into heat energy so that the surface temperature of the asphalt mixture is rapidly and uniformly increased to 5 DEG C from-20 DEG C, and an effective snow melting function can be achieved for an accumulated snow pavement; the asphalt mixture doped with the ferrite powder has the advantages that the heat conductivity coefficient is increased by 0.4-0.8 W / (m.K) compared with the original heat conductivity coefficient, the heat conduction capability of the pavement is effectively improved, and the snow melting function isenhanced.

The invention discloses environment-friendly and stable asphalt mixture modifier for melting snow. The modifier comprises the following components in part by weight: 60 to 90 parts of porous material, 10 to 40 parts of animal and vegetable oil and 0.1 to 5 parts of inorganic salt. The invention further discloses a preparation method of the environment-friendly and stable asphalt mixture modifier for melting the snow. The modifier provided by the invention has the advantages of stable composition performance of the components, economy, environmental friendliness, simple preparation process and preparation equipment, and stable and efficient use performance, and realizes scientific, reasonable and effective recovery and reuse of waste resources.

The invention discloses a low-corrosivity environmentally-friendly compound antiskid snow-melting agent and a preparation method thereof. The snow-melting agent is prepared from the following raw materials in parts by weight: 45 to 55 parts of inorganic salt, 35 to 42 parts of organic salt, 1 to 2 parts of a corrosion inhibitor and 8 to 10 parts of an adsorbent. The adsorbent is bentonite, and the corrosion inhibitor is sodium phosphate. The inorganic salt is prepared from the following raw materials in parts by weight: 20-25 parts of calcium chloride and 25-30 parts of ammonium chloride. The organic salt is urea. Preferably, the snow-melting agent is prepared from the following raw materials in parts by weight: 45 parts of inorganic salt, 40 parts of organic salt, 1 part of the corrosion inhibitor and 8 parts of the adsorbent. The preparation method of the low-corrosivity environmentally-friendly snow-melting agent provided by the invention is simple, and is conducted at normal temperatures and pressures; the method is mild in condition, the raw materials are easy to get, sources are wide, and industrial production is easy to realize; and moreover, the snow-melting agent has the advantages of low price, high snow melting speed and the like, and is applicable to large-scale popularization.

The invention provides an environment-friendly compound snow-melting agent and also provides a preparation method of the environment-friendly compound snow-melting agent. The environment-friendly compound snow-melting agent is prepared from 80-95 parts of compound salt, 5-20 parts of a corrosion inhibitor and 1-2 parts of a plant growth aid. The prepared environment-friendly compound snow-melting agent has excellent snow and ice melting capability, has small corrosion to metal and concrete and is harmless to plants.

A disclosed improved type vehicle windshield washer fluid is prepared from the following raw materials in parts by weight: 6-14 parts of calcium chloride dihydrate, 14-18 parts of propylene glycol methyl ether, 5-7 parts of water-soluble silicone oil, 18-36 parts of isopropanol, 7-11 parts of dodecyl dimethyl benzyl ammonium chloride, 8-12 parts of pentaerythritol aliphate, 2-8 parts of anhydrous sodium metasilicate, 3-7 parts of an alkaline earth metal hydrochloride, 7-12 parts of glycerol boric acid aliphatic ester, 10-15 parts of 1,4-butanediol, 3-6 parts of sodium fatty alcohol polyoxyethylene ether sulfate, 4-8 parts of EDTA disodium salt, 6-9 parts of isoamyl acetate, 8-12 parts of glycol, and 33-53 parts of deionized water. The provided improved type vehicle windshield washer fluid is capable of rapidly removing oil dirt and shellac on a windshield, has the rapid-drying characteristic, and is capable of effectively reducing resistance of wiping water, reducing noise and rapidly removing frost and snow.

The invention provides a composite snow melting agent which is prepared by compositing composite salt, a corrosion inhibitor and a plant growth auxiliary.The prepared composite snow melting agent has the advantages of being low in ice melting temperature, small in corrosivity to metal and beneficial for plant growth.

The invention discloses a road snow melting device, which comprises a storage chamber located on the upper part of the housing and a mixing chamber inside the housing. A U-shaped chamber is also fixed on the upper part of the housing. Feed pipe 2, feed pipe 1, and feed pipe 2 are respectively connected to the top of the mixing chamber, the inlet of feed pipe 1 and the inlet of feed pipe 2 are provided with screw propulsion rods, and the inside of the mixing chamber is provided with a stirring rod. mechanism, the two sides of the bottom of the mixing chamber are connected with an output pipe, the output pipe is provided with a screw propulsion rod, the end of the output pipe is connected with a grading valve, and the side wall of the housing is connected with a mechanical shovel. The present invention uses cheap and easy-to-obtain black carbon powder, coal ash, and cinder powder as snow-melting substances, and uses snow collected on the side of the road as a medium for dispersing the snow-melting substances, which can reduce the volume of the whole device, and the snow-melting substances used can fully absorb sunlight. Photothermal energy can increase the speed of snowmelt without damaging plants, pipes, and road surfaces. It is safe and environmentally friendly, and easy to promote.

The invention discloses a ceramic fiber-added compound snow-melting deicing agent special for urban roads. After sugarcane leaves and hemp palm barks are swelled and filled with polyacrylic acid emulsion, the cell walls are enhanced; the gaps in staggered fiber space is filled with the resins, so that the combination between fiber and fiber is enhanced; more micro-pores are introduced after carbonization, so that the adsorption capacity can be improved; according to the invention, glacial acetic acid is replaced by pyroligneous acid, modified fluorite powder is taken as calcium and magnesium precursor, the two materials are mixed to form the snow-melting agent, and the prepared snow-melting agent and anti-sliding auxiliaries are wrapped and pelletized and then are dried, so that the compound snow-melting deicing agent is acquired; the compound snow-melting deicing agent is added with the ceramic fibers, so that the strength is high and the compound snow-melting deicing agent is difficult to be crushed by automobiles; after the snow and ice are melted, the freezing point can be quickly reduced; the ceramic fiber-added compound snow-melting deicing agent can absorb heat so as to accelerate the snow melting; the residual liquid can be absorbed by the anti-sliding auxiliaries so as to prevent the pavement from being corroded; the method provided by the invention is low in cost, high in product fluidity and good in snow-melting effect.

The invention discloses a road snow melting system with inorganic medium heat pipes based on ground temperature and solar energy and a using method of the road snow melting system. The road snow melting system comprises a bridge bedding course, wherein the bridge bedding course is provided with the inorganic medium heat pipes; each inorganic medium heat pipe comprises a heat pipe heating section,a heat dissipation section and an endothermic section; the heat pipe heating sections are provided with electric heating wires; the heat pipe heating sections are wrapped by flexible solar panels andconnected to the electric heating wires; the heat dissipation sections are uniformly arranged on the bridge bedding course; the heat pipe heating sections are also provided with auxiliary power interfaces; a lapping ring and a lapping hook are arranged between every two adjacent flexible solar panels; and the solar panels can expand in the case of lack of sunshine. The road snow melting system with the inorganic medium heat pipes based on ground temperature and solar energy realizes the advantage of fast and convenient melting of snow according to weather conditions without damaging road surfaces.

The invention discloses a special working device of a snow melting agent spreading machine. The device mainly comprises a main supporting frame, a hopper is installed on the upper portion of the main supporting frame, a discharge port is formed in the lower portion of the hopper, and a spreading rotary disc is arranged below the discharge port. The snow melting agent spreading device is characterized in that a motor is arranged below the rotary disc, the motor is fixed onto a motor supporting frame through bolts, the motor supporting frame is fixed onto the hopper through bolts, the spreading rotary disc and a spiral spring are sequentially fixed to an output shaft of the motor upwards, the spiral spring is arranged over a hopper opening, a bearing and a bearing outer cylinder are arranged above the spreading rotary disc, a baffle guide rail is arranged on one side of the hopper, a baffle is inserted into the baffle guide rail, a positioning hole is formed in an upper panel of the guide rail, and a plum blossom knob is screwed in the positioning hole in the upper panel of the guide rail. The main supporting frame is assembled at the front end of a swing arm of a crawler-type carrier vehicle. The snow melting agent spreading device can be installed on the crawler-type carrier vehicle and move forwards together with the crawler-type carrier vehicle; as the motor rotates, the spreading rotary disc is driven to rotate together with the spiral spring, snow melting agents are driven to fall on the rotating spreading rotary disc through the rotating effect of the spiral spring, the snow melting agents are evenly spread to the side, where accumulated snow exist, of a road, snow is melted, the working efficiency is high, and the road snow melting speed is increased.

The invention discloses a preparation method of a chloride-free, composite and environment-friendly snow-melting agent and belongs to the technical field of snow-melting agent preparation. According to the method, traditional Chinese medicine decoction dregs are smashed, carbonized and acid-dipped to obtain modified traditional Chinese medicine decoction dregs, then wheat is liquified and saccharified to obtain saccharifed liquid, the saccharifed liquid is prepared into a fermenting culture medium, saccharomycetes and acetic acid bacteria are inoculated to perform fermenting culture, the fermenting liquid is sterilized and then is added into egg shells to perform heating reaction, the fermenting liquid rich in calcium nitrate can be generated and finally is mixed with the traditional Chinese medicine decoction dregs, and adsorption is performed to obtain the chloride-free, composite and environment-friendly snow-melting agent. The method utilizes the modified traditional Chinese medicine decoction dregs to absorb the fermenting liquid rich in calcium nitrate, makes the snow-melting acting time long, meanwhile has the advantages of being low in freezing point and high in snow-melting rate, and the agent almost does not corrode metals, concrete and bituminous pavement, is non-harmful to plants and has wide application prospect.

The invention relates to a novel and environment-friendly snow-melting agent and a preparation method thereof and belongs to the technical field of snow-melting agents. The snow-melting agent mainly comprises raw materials in parts by weight as follows: 2-14 parts of garlic juice, 3-12 parts of plant ash, 20-60 parts of formate, 1-8 parts of sodium bicarbonate, 0.05-1.2 parts of polycarboxylic acid, 0.1-1.9 parts of ammonium dihydrogen phosphate and 0.05-3.5 parts of glycolic acid. According to the novel snow-melting agent, the raw materials are easy to obtain and the cost is low. The snow-melting agent is high in snow melting efficiency, the problem that traditional snow-melting products corrode road and ridge reinforcing steel bars is solved, and effects and damage caused by the snow-melting agent on roads and the environment are reduced to the greatest extent.

Belonging to the technical field of snow-melting agents, the invention relates to a non-chlorine environment-friendly snow-melting agent, which adopts organic salt as the main components and does notcontain chlorine element. Sodium formate, urea, potassium acetate, sodium carbonate, montmorillonite, sodium tetraborate and alkyl phenol polyoxyethylene ether are used as the raw materials, and by means of crushing, mixing, granulation, screening and packaging, the product can be obtained. Compared with the existing products, the non-chlorine environment-friendly snow-melting agent provided by the invention has the characteristics of good snow-melting effect, fast snow-melting speed, long snow-melting time, high forming rate, no chlorine, no harm to facilities, vehicles, plants, water bodiesand the like, no odor, salting or slip after spreading, and high cost performance.

The invention discloses a device for efficiently heating a photovoltaic module. The device comprises a semiconductor heater and a control circuit. The semiconductor heater is used for locally and intensively heating the photovoltaic module, and the control circuit is used for controlling the starting and stopping of the semiconductor heater. The control circuit comprises a light sensation controller and a current detection controller which are connected in series, wherein the light sensation controller or the current detection controller is electrically connected with the semiconductor heater,and the light sensation controller is switched on in the presence of light, or otherwise, the light sensation controller is switched off; and the current detection controller is closed when detectingthat the generation current of the photovoltaic module is smaller than a set constant value, or otherwise, the current detection controller is opened. When the device works, the photovoltaic module is locally and intensively heated; the unheated module part becomes a thermal load due to no power generation capacity, the released heat can gradually melt ice and snow to enlarge the power generationarea and generate a positive feedback effect; and finally, the snow melting of the photovoltaic module can be realized automatically and quickly with high efficiency and at low cost and without manual intervention, and the power generation capacity can be recovered or improved.

The invention relates to an environment-friendly snow-melting agent and a preparation method thereof, the environment-friendly snow-melting agent comprises natural zeolite slag, waste heat-conducting oil, petroleum coke powder, slag powder and sodium silicate, and the parts by weight of the following components are: 36-48 parts of natural zeolite slag, 3-6 parts of waste heat-conducting oil, 1-10 parts of petroleum coke powder, 46-52 parts of slag powder and 6-12 parts of sodium silicate. The preparation method of the environment-friendly snow-melting agent comprises the following steps: firstly, impregnating the natural zeolite slag with the waste heat-conducting oil in parts by mass for 3-6 hours; then adding the petroleum coke powder and the slag powder according to the mass part ratio, and stirring for 2-8 hours; and finally adding the sodium silicate solution according to the mass part ratio, spraying and granulating, and drying at the temperature of 20-80 DEG C to obtain the environment-friendly snow-melting agent finished product. The snow-melting agent is high in snow melting speed, small in dosage and low in use cost, secondary utilization is achieved, snow water cannot be secondarily frozen, and corrosion and damage are avoided. The snow-melting agent can be widely applied to the field of road traffic ice and snow melting.

The invention relates to an environment-friendly snow-melting agent and a preparation method thereof, belonging to the technical field of snow-melting agents. The snow-melting agent mainly comprises the following raw materials in parts by weight: 5-35 parts of ginger juice, 2-8 parts of ionic liquid, 0.8-4.6 parts of n-butyl alcohol and 0.2-2.6 parts of ethyl acetate. The invention also provides the preparation method of the snow-melting agent. The preparation method comprises the following steps: (1) preparing the ginger juice; (2), (3) and (4) preparing the snow-melting agent. The novel snow-melting agent provided by the invention has the beneficial technical effects that the raw materials are easy to obtain; the cost is low; the snow-melting agent has high snow melting efficiency and conduces to solving the problem of corrosion of road and bridge reinforcements caused by traditional snow melting products; the impacts and damages of the snow-melting agent on roads and environments are furthest reduced; the snow-melting agent is applicable to the low-temperature environment at minus 50 DEG C and has a wider application range of environments.

The invention discloses a method of producing a solid snow-melting agent by utilizing waste marble, and belongs to the technical field of the preparation of a snow-melting agent. The method comprises the following steps: calcining the marble to oxidize calcium carbonate to be calcium oxide, then placing the calcium oxide and coke into a calcium carbide furnace, calcining at a high temperature to prepare calcium carbide, so that a purpose of removing snow is realized by utilizing the performance that a mixed powder of the calcium oxide and the coke can release a great amount of heat when meeting water, can rapidly melt the snow cover and are likely to dissolve in water to form a solution so as to reduce the freezing point of the water. The method has the beneficial effects that the solid snow-melting agent is low in cost, high in snow melting speed, harmless to the environment, and non-corrosive to road and large-sized public infrastructures, a residual product of molten snow can neutralize acidity and improve acidic soil and thus is favorable for the living of crops; by sufficiently adopting the waste marble to produce the solid snow-melting agent, waste is converted into treasure, and the sustainable utilization of resources is realized.

The invention relates to an environment-friendly type snow melting agent, which comprises glycol, water, sodium acetate, aqueous calcium acetate, ammonium citrate, sodium gluconate and ammonium biphosphate according to a certain mass proportion. The preparation method comprises the following steps: preparing each raw material component according to mass proportion, crushing one by one and sieving, taking the raw material particles with particle size of 1-5mm; adding the raw materials in a container, fully stirring, uniformly mixing; metering and weighting, and packaging in bags or cans to obtain the products. The snow melting speed is rapid, the snow melting effect is good, the molten snow-broth can be difficultly frosen to ice; and has the characteristics of no corrosion on steel, and no pollution on road surface, soil and water, and has no harm to human health and animal and plant growth, so that the environmental protection requirement can be fully reached; and can effective guarantee the road traffic safety. The preparation method is simple, the cost is low, and the method is adapted to industrial production and popularization, and has good economic benefit and social benefit.