32results about How to "To achieve the purpose of comprehensive utilization of resources" patented technology

The invention provides a method for preparing a gelling composite material with piezoelectric property, the gelling composite material and application of the gelling composite material, and belongs to the field of intelligent road traffic. According to the method, titanium-containing blast furnace slag and metal oxides (PbO and ZrO2) are sufficiently and uniformly mixed and then roasted under a certain thermal system, and on the theoretical basis of mineral phase reconstruction-synergistic regulation of all valuable components, the mixture is cooled to the room temperature along with a furnace to obtain the gelling composite material with piezoelectricity. The piezoelectric cementing material with diversified application scenes is prepared, a theoretical basis is provided for solving the problem that the compatibility matching is poor when a pure PZT material is applied to cement concrete on a large scale, and the piezoelectric cementing material can be applied to multiple fields such as novel intelligent roads, intelligent roadbeds and key structure real-time health monitoring. A brand new thought is provided for unique green short-process high-added-value large-scale utilization of the titanium-containing blast furnace slag difficult to treat in China.

This invention has provided one kind of method to leach high price manganese from manganese carbonateore, which belongs to the hydrometallurgy domain. It takes the glucose or the plant biomass and sulfuric acid as reducing agent of high pricemanganese in manganese carbonate ore, adopting microwave radiation glucose to promote high price manganese to revert, the concrete step includes: Takes 1 copy 100-200 sieve manganese carbonateore, add 10 -20 copy water to modulate the pulp; Again add 60% density sulfuric acid to pulp, the load ratio of mineral powder and sulfuric acid is 1: 6 -9; Simultaneously, add glucose or plant biomass, the load ratio of mineral powder and glucose or plant biomass is 10 -15: 1, stir evenly; radiate under 500 -1000W microwave, stir and respond for 4-10min, leach temperature is controlled at 50degree C-60 degree C, then get lixivium by filtering. This invention has the merits of lower reaction temperature, reducing acid consume and reduce leaching time of the manganese ore, high thermal using and respond rapidly.

The invention provides a metal ion adsorbent with high adsorption capacity—xanthated bentonite and a preparation method thereof. The high adsorption capacity metal ion adsorbent is prepared by taking sodium bentonite as raw material, reacting with carbon disulfide after dispersion and alkalization, and then transforming with magnesium salt to generate stable magnesium salt of xanthate-based bentonite. The xanthate-based bentonite has strong adsorption capacity for heavy metal ions, and can be applied to the treatment of wastewater containing heavy metal ions. The process of the invention is used for the treatment of heavy metal wastewater, and has the characteristics of simple and easy operation, fast and convenient operation, high removal rate of metal ions, easy separation of solid and liquid, and the like.

The invention relates to the field of chemical industry and in particular to a method for preparing nano calcium sulfate. The method comprises the following steps: adding a crystal form control agent into refined lime milk to produce a CaSO4 crystal nucleus, and fully emulsifying the lime milk; atomizing the lime milk to be sprayed into an absorption tower, introducing sintering flue gas and cool-humidified oxidation air into the absorption tower, thereby obtaining gypsum slurry, wherein the sintering flue gas needs to be subjected to dust extraction and purification and cooling humidification before introduction; adding a modifier into the gypsum slurry for performing surface modification treatment, so that the surface of the produced CaSO4 powder is hydrophobic; and preparing nano calcium sulfate through the gypsum slurry subjected to surface modification treatment. The nano calcium sulfate is directly produced by utilizing SO2 in the sintering flue gas, so that the environmental pollution problem is solved, and a comprehensive resource utilization aim is achieved.

The invention discloses a recycling method of carbide slag, which comprises the following steps of: (1) reacting the carbide slag with the solution of sodium carbonate and filtering the reaction solution to obtain filtrate B and filter residue A, wherein the filtrate B is the solution of sodium hydroxide; (2) adding the filtrate A into hydrochloric acid, heating the mixture till the mixture boilsto perform a reaction, filtering the reaction solution to obtain a filter residue C and a filtrate D, wherein the filter residue C is used as clinker for cement production; and (3) adding hydrogen peroxide into the filtrate D to perform a reaction for 10 and 20 minutes, adjusting pH value of the reaction solution to 8.5 and 9.0 by using saturated lime water, filtering the reaction solution, drying the filter residue to obtain ferric hydroxide, concentrating the filtrate to precipitate a calcium chloride dehydrate solid, processing the obtained concentrated residual liquid by using the solution of sodium carbonate, filtering the mixed solution to obtain a solid mixture of magnesium carbonate and calcium carbonate, reacting the mixture react with the solution of sulphuric acid and filteringthe reaction solution to obtain calcium sulphate solids and the solution of magnesium sulfate. The resource processing method for the carbide slag has the advantages of various byproducts, high product quality, simple process flow, small equipment investment, easy operation, mild reaction conditions, low production cost, environmental friendliness and wide application prospect.

The invention discloses a method for removing sulfur dioxide in smoke by using white mud, which uses the white mud plasma as desulfurization solution, and implements the two-stage absorption desulfurization to the sulfur dioxide in smoke and then dissipates fog and discharges the smoke. The desulfurization solution absorbed in the first stage is collected at a low position, and is stored for recycling thereby forming a low position cycle, and the desulfurization solution absorbed in the second stage is collected at a high position, and is stored for recycling thereby forming a high position cycle; the desulfurization solution stored in the high position cycle overflows to the low position cycle, and the desulfurization gypsum generated in the low position cycle is pumped out for cyclone separation, top-flowing thin gypsum plasma refluxes to the high position cycle, and the bottom thick gypsum plasma is treated for deslagging. The invention also discloses a device for realizing the method. The inventive method and device has reasonable design and can effectively improve desulfurization efficiency.

The invention discloses a method for stabilizing and immobilization cadmium in heavy metal pollution deposition by utilizing flue gas desulfurization gypsum, belonging to the field of environmental-protection technology. 5-25wt percent of desulfurization gypsum is added in the cadmium polluted deposition as stabilization fixing agent, 400ml of water is added according to the proportion of 10ml ofwater in every gram of deposition, under a room temperature condition, the mixture is stirred in a magnetic stirrer at room temperature, so as to carry out cadmium stabilization and immobilization treatment in the heavy metal pollution deposition; the cadmium content in the deposition solution is used as the immobilization effect evaluation parameter of the cadmium in the deposition. In the invention, while solving the problem of the stabilization and immobilization of the cadmium in the deposition, the problem of recycling comprehensive utilization of flue gas desulfurization gypsum in coal-fired power plant is solved, so as to achieve the purposes of controlling waste by waste and recycling comprehensive utilization.

The invention discloses a new process aiming at recycling treatment and comprehensive utilization of barium sulfate waste residues, and is suitable for all barium salt production manufacturing industries. The process has the main innovations that sintered ores and symbionts in the waste residues produced from production of barium sulfate are stripped for the first time, the waste residues are sorted according to the difference of densities of components, and barite and coal which are not reacted completely are recycled and return to a furnace for reuse; the barium sulfate content of the recycled barite component can reach more than or equal to 80%; and the rest of the residues after harmless treatment are used for preparing an energy-saving wall filling material-a foam concrete block having a radiation protection function. The process not only solves barium sulfate waste residue accumulation and land occupation and various pollution problems on the environment but also recycles the barite and coal which are not reacted completely, besides, makes full use of the radiation protection performance of barium, prepares the novel radiation-protection foam concrete block, saves energy, protects the environment, achieves the purpose of comprehensive utilization of resources, and thoroughly solves the solid waste emission problems in the barium salt production industries.