2188 results about "Kiln burner" patented technology

The invention relates to a novel high-heat anticorrosive biomass alcohol-based fuel, and relates to the field of environment protection. The alcohol-based fuel is prepared with main combustion agents of methanol and ethanol and auxiliary materials of alcohol-based fuel additives. The fuel is prepared from 60-90% of methanol, 10-30% of ethanol, 2-8% of a combustion-enhancing heat-gain agent, 0.01-0.2% of a corrosion inhibitor, and 0.1-1% of a safe stabilizer. The fuel provided by the invention has the advantages of high heat value, easy ignition, stable combustion, corrosion resistance, no air resistance, explosion-proof safety, clean property and no odor, low emission, low cost, energy saving, and environment friendliness. The heat value can be increased to 6500-7000 kcal/kg, and a central flame temperature can reach 1200-1300 DEG C. The fuel provided by the invention can be used in fields such as stoves, boilers, industrial furnaces, and the like.

The invention relates to an organic-inorganic composite combined advanced monolithic refractory which has the formula of 40 to 56 percent of 5-1mm corundum or bauxite, 12 to 30 percent of 1-0.0088mm corundum or bauxite, 16 to 25 percent of corundum or bauxite with d90 less than 0.088mm, 0 to 5 percent of alpha alumina micropowder, 1 to 8 percent of hydratable alumina, 1 to 6 percent of siliceous dust, 0 to 2 percent of calcium aluminate cement, 0.05 to 0.4 percent of external efficient water reducing agents (polycarboxylic acid plus sulfonation naphthaldehyde polymer plus sulfonation melamine polymer), 1 to 6 percent of latex of the system of external polyacrylic acid, 1 to 6 percent of external water and 0 to 3 percent of external heat-resistant steel fiber. Casting materials of the invention have excellent performances of condensation, hardening, demoulding, drying and heating and are suitable for high-temperature furnace projects with changeful field conditions.

A method for rapidly reducing copper slags to produce iron-copper alloys in a kiln in a reducing atmosphere is characterized by including the steps: proportionally mixing the copper slags, reducing agents and additives, crushing or levigating the mixture to 200 meshes to obtain 20%-40% of residues on sieve; doping agglomerants and water occupying 5-20% of all materials on a dry mass basis, uniformly mixing, producing the uniformly mixed mixture to pellets with the diameters ranging from 15mm to 30mm and small cylindrical briquettes with all the heights ranging from 15mm to 30mm by a pellet press or a briquetting machine, and drying the pellets or small cylindrical briquettes; flatly laying the dried pellets or small cylindrical briquettes at the bottom of the kiln, wherein the material layer thickness ranges from 20mm to 45mm, the material layer reducing temperature ranges from 1250 DEG C to 1450 DEG C, and the reducing time is 10-40min; and subjecting the reduced pellets or the briquettes to cooling, crushing, wet grinding and wet separation so that iron-copper alloy powder with the iron recovery rate of 85%-99% is obtained. According to the method, iron in a great quantity of silicate iron in the copper slags, which cannot be separated out by the traditional technology, is extracted and turns into the iron-copper alloy micro powder with high added value so that iron and copper in the copper slags are extracted and used simultaneously, and physical and chemical heat energy in strong reducing waste gas can be completely recovered during rapid depth reduction.

The invention relates to ceramics and a production technology thereof, in particular to a household strengthen porcelain containing bone substances and the production technology thereof. The strengthen porcelain body comprises petalite, powdered alumina, bone powder, quartz, Longyan braying, Guizhou soil, Zimo saved soil and humic acid sodium; the glaze comprises spodumene, fritted glaze 317, bone powder, kaolin, zirconia, potassium feldspar and aedelforsite; the production technology of the strengthen porcelain comprises the steps of batching, water adding and ball milling, sifting out, iron removing, filter pressing, primary smelting, ageing, refining, molding, drying, glazing and kiln firing. The product of the invention has the advantages of high mechanical strength, good thermal stability, fine and glossy glaze, high whiteness, good transmittance and the like.

The invention discloses a method for preparing lithium iron phosphate with a dynamic sintering method and a sintering device thereof, belonging to the technical field of lithium ion battery anode materials. The processing route of the method comprises the following steps of: preparing materials; ball-milling with a wet method; drying in vacuum at low temperature; sintering; preliminarily crushing; ball-milling; sifting and detecting and packaging. Since a solid phase carbothermic reduction method is combined with dynamic sintering, a sintering process is simplified, raw materials are heated more uniformly, and an obtained lithium iron phosphate product has smaller and more uniform particles and higher electrochemical performance. A special sintering device is also adopted in the method and comprises a feeding device, a double-layer sintering kiln, a discharging valve, a product discharging device and an atmosphere control execution device, wherein a sintering inner hearth cylinder of the sintering kiln is lifted in a reciprocating way and rotated. The invention has the advantages of simple process and equipment, low energy consumption, adequate material mixing, favorable uniformity and high stable performances between batches of the lithium iron phosphate and is widely applied to preparation of the lithium ion battery anode materials.

The invention discloses a method for preparing a graphene modified high-nickel series positive electrode material through a spray drying process and the positive electrode material prepared by the same. The method includes following steps: 1), well mixing high-nickel precursor with lithium carbonate or lithium hydroxide according to a certain molar ratio, calcining in an oxygen atmosphere roller way kiln, and smashing to obtain a high-nickel primary smashed material; 2), adding a dispersant, a binder and graphene into a solvent, and stirring and dispersing well to form graphene electroconductive paste with certain solid content, wherein the graphene electroconductive paste is a uniform emulsion in dispersion state; 3), stirring and mixing an oxygen-containing compound source with the high-nickel primary smashed material, adding the graphene electroconductive paste, stirring to obtain graphene mixed paste; 4), utilizing a spray dryer for drying, calcining in the oxygen roller way kiln,smashing, and screening to obtain a final graphene modified high-nickel product. The graphene modified high-nickel positive electrode material produced by adopting the method has the advantages of lowresidual alkali and excellent rate performance and circulating performance and is suitable for industrial production.

The invention discloses a shell casting method through contraction and then gasification of high-performance coating foam and a mold sample of an evanescent mode. The method comprises the following steps of: manufacturing the mold sample; preparing an inner-layer coating and an outer-layer coating; spreading the coatings; drying the coatings; performing reduction and contraction; performing gasification and evanescence; and packing and casting, wherein the inner-layer coating is prepared by mixing and stirring an additive special for a Guilin No. 5 evanescent mode coating, refractory aggregate powder with 180-220 meshes and water; and the outer-layer coating is prepared by mixing and stirring an additive special for a Guilin No. 5 evanescent mode coating, refractory aggregate powder with thickness being 70-100 meshes and180-220 meshes in half and water; According to the method, the mold sample has sufficient strength, dimensional accuracy and surface smoothness; carbon defects such as recarburization, slag inclusion, air holes, cockles and carbon black caused by the foam mold sample can be eliminated; the method is applicable in casting the evanescent mode with any steel; the situation that 5-10 layers of coatings are coated, and 5-10 layers of dry sand are spread when in investment casting does not needed; roasting at the temperature of 1000 DEG C in a kiln is unnecessary; and the process is simple, has low cost, and has energy conservation and emission reduction.

The invention relates to a method for producing Portland cement clinker with incineration slag of municipal solid waste. The method solves the problem of crust and blockage caused by chlorine through the reconstruction of the prior kiln which is realized by mounting a by-way air exhaust device. For a kiln system with a kiln row and a furnace row which are independent from each other, the by-way air exhaust device is arranged in an uptake of a kiln end gas chamber in the kiln row close to a five-stage cylinder; while for common industrial kiln, the air exhaust device is arranged between an outlet of decomposing furnace and an inlet of the five-stage cylinder or arranged at an uptake of an outlet of the five-stage cylinder; the fly ash passes through a kiln head, the kiln end gas chamber, or the decomposing furnace and then is sprayed into the kiln. The use frequency of the by-way air exhaust device is between once per four hours and once per three days, the temperature of the air entering the by-way air exhaust device is controlled to be more than 950 DEG C. the method has the advantages of small reconstruction investment, low treatment cost, production of Portland cement clinker having wide application range and meeting JC/T853-1999 standards of Portland Cement Clinker, realization of reclamation, contribution to the development of cyclic economy, and reduction in consumption of natural resources and energy of the cement industry.

The invention discloses a whole-process low-nitrogen combustion technology applied to a cement kiln for reduction of the cement kiln NOx discharge quantity. Preheaters, a decomposing furnace, a rotary kiln, a coal injection pipe, a tertiary air pipe as well as pulverized coal and raw material feeding of a kiln system are taken as a whole for systematic control, a user starts from inhibition of generation of NOx and reduction of generated NOx to scientifically and reasonably adjust and control the quality of the rotary kiln, the quality of decomposing furnaces, the quality of fuel, the mass of the fuel, reasonable distribution of a combustion device and combustion-supporting air and the like, and the temperature field and the atmosphere field of the kiln are systematically controlled. The technology mainly comprises a cooling machine (1), the rotary kiln (2), a kiln head pulverized coal combustion device (3), the decomposing furnace (4), a kiln tail pulverized coal combustion device (5), the tertiary air pipe (6), an air dividing pipe (7) of the tertiary air pipe (6), a fourth-stage suspending preheater (8), a fifth-stage suspending preheater (9) and a discharging pipe (10), wherein the rotary kiln (2) comprises an oxidation zone (11) and a reduction zone (12), and the decomposing furnace (4) comprises an oxidation zone (13) and a reduction zone (14).

The invention discloses a high-nickel positive electrode material with a composite coating layer and a preparation method thereof. The preparation method comprises the following steps: (1) uniformly mixing a high-nickel positive electrode material and a nano-coating material, and carrying out high-temperature sintering, cooling, crushing and sieving in a preheated muffle furnace under an oxygen atmosphere to obtain a nano-material-coated high-nickel positive electrode material; and (2) adding the high-nickel positive electrode material coated with the nano material into deionized water dissolved with a soluble lithium compound, uniformly stirring, slowly adding soluble phosphate, uniformly stirring, carrying out vacuum filtration, drying and re-burning in a kiln, cooling, crushing and sieving to obtain the high-nickel positive electrode material with the composite coating layer. According to the high-nickel positive electrode material with a composite coating layer and the preparationmethod thereof, multi-layer uniform coating of the nano material and phosphate is realized through dry-process and wet-process coating, and the prepared positive electrode material has the advantagesof good cycle performance, good thermal stability and the like, and the preparation process is simple, and the positive electrode material can be used for industrial mass production and has a wide application prospect in lithium ion battery production.

The invention discloses a glass wool for a dry vacuum insulated panel core material and a production method thereof. The production method comprises the following steps of mixing the following components in parts by mass to form a mixture: 10.0-40.0 parts of quartz powder, 10.0-12.5 parts of feldspar, 9.0-11.0 parts of sodium borate, 1.5-3.5 parts of calcspar, 2.5-7.0 parts of dolomite, 7.0-15.0 parts of sodium carbonate and 15.0-60.0 parts of plate glass; adding the mixture into a melting tank of a kiln to melt and prepare vitreous humour; putting the vitreous humour into a bushing well and a centrifugal plate, and conveying to a centrifugal machine to spin and prepare the glass wool. The glass wool disclosed by the invention can be directly prepared into the dry vacuum insulated panel core material. Compared with the insulated panel core material produced by a wet process, the glass wool is short in production flow; and wet pulp is prepared without adding water or baking. Therefore, the production efficiency is improved; the energy source is greatly saved; the price of the insulated panel is reduced, and strong popularization and use of the market are facilitated.

The present invention provides one kind of wall scraping paint with gypsum as main material and its production process. The wall scraping paint is produced with natural gypsum or chemical gypsum, water retaining agent, adhesive, retarding agent, suspending agent and calcium carbonate powder. The production process includes crushing natural gypsum or chemical gypsum to fineness smaller than 80 mesh, calcining in a kiln at 180 -400 deg.c for 2-4, mixing with water retaining agent, adhesive, retarding agent, suspending agent and calcium carbonate powder, and milling into 250-600 mesh fine powder. The wall scraping paint is scraped to wall and has excellent anticracking capacity, high waterproof property, no pollution and other advantages.