14212 results about "Kiln" patented technology

The process and system of the invention converts carbonaceous feedstock such as coal, hydrocarbon oil, natural gas, petroleum coke, oil shale, carbonaceous-containing waste oil, carbonaceous-containing medical waste, carbonaceous-containing military waste, carbonaceous-containing industrial waste, carbonaceous-containing medical waste, carbonaceous-containing sewage sludge and municipal solid waste, carbonaceous-containing agricultural waste, carbonaceous-containing biomass, biological and biochemical waste, and mixtures thereof into electrical energy without the production of unwanted greenhouse emissions. The process and system uses a combination of a gasifier, e.g., a kiln, operating in the exit range of at least 700° to about 1600° C. (1300-2900° F.) to convert the carbonaceous feedstock and a greenhouse gas stream into a synthesis gas comprising mostly carbon monoxide and hydrogen without the need for expensive catalysts and or high pressure operations. One portion of the synthesis gas from the gasifier becomes electrochemically oxidized in an electricity-producing fuel cell into an exit gas comprising carbon dioxide and water. The latter is recycled back to the gasifier after a portion of water is condensed out. The second portion of the synthesis gas from the gasifier is converted into useful hydrocarbon products.

The production process of health ceramic brick capable of releasing negative ion includes introducing nanometer negative ion powder comprising tourmaline 20-40 wt%, dravite 10-20 wt%, nanometer TiO2 20-40 wt% and composite RE salt 5-12 wt%, making the nanometer negative ion powder combined well with ceramic base and sintering at 1080-1200 deg.c inside roller hearth kiln. The health ceramic brick has stable negative ion releasing function in health level and radiation performance index meeting relevant requirement.

The process and system of the invention converts carbonaceous feedstock such as coal, hydrocarbon oil, natural gas, petroleum coke, oil shale, carbonaceous-containing waste oil, carbonaceous-containing medical waste, carbonaceous-containing hazardous waste, carbonaceous-containing medical waste, and mixtures thereof into electrical energy without the production of unwanted greenhouse emissions. The process and system uses a combination of a gasifier, e.g., a kiln, operating in the exit range of at least 700° to about 1600° C. (1300–2900° F.) to convert the carbonaceous feedstock and a greenhouse gas stream into a synthesis gas comprising mostly carbon monoxide and hydrogen without the need for expensive catalysts and or high pressure operations. One portion of the synthesis gas from the gasifier becomes electrochemically oxidized in an electricity-producing fuel cell into an exit gas comprising carbon dioxide and water. The latter is recycled back to the gasifier after a portion of water is condensed out. The second portion of the synthesis gas from the gasifier is converted into useful hydrocarbon products.

The invention discloses a formula and a method for manufacturing ceramic tile blank bodies by utilizing polished waste residues. The formula adopts ingredients by weight portions: porcelain clays account for 18 to 40 parts, clays account for 20 to 30 parts, limestone grains account for 1 to 10 parts, wollastonite grains account for 3 to 15 parts, glazed tile sludge residues account for 3 to 10 parts, ceramic polished waste residues account for 15 to 45 parts, soluble glass accounts for 1 to 2 parts, thinners account for 0.15 to 0.4 parts, sodium tripolyphosphate accounts for 0.05 to 0.2 parts, and a proper amount of water is adopted. A manufacturing method of the ceramic tile blank bodies comprises the steps as follows: a. raw materials are put in a ball grinder for ball milling after being blended so as to form sizing agents with proper fineness and screen tailings through milling, and the sizing agents are processed through deferrization, sieving and spray drying so as to form powders; and b. the powders are put in a die cavity of a press forming machine to form waterish blanks through pressing, the waterish blanks are dried in a drying kiln, the dried waterish blanks are applied with base pulp and then enter a biscuit firing kiln, biscuit firing is carried out under the temperature ranging from 1080 to 1160 DEG C, heat preservation is carried out in an area with the temperature ranging from 1040 to 1060 DEG C, the sintering time of the area is prolonged, and the sintering process for oxidizing atmosphere can be enhanced at the same time so as to obtain the ceramic tile blank bodies.

The invention relates to a ceramic tile with a dry particle glaze-decorated surface. The structure of the ceramic tile comprises a blank layer, a base glaze layer, a cover glaze layer, a printing layer and a dry particle layer from bottom to top, wherein the dry particle layer comprises the same kind of dry particles or the combination of more than two different kinds of dry particles; the different kinds of dry particles are different in particle size and refractoriness; and the particle size of the middle dry particles in the dry particle layer is (-60)-(-120) meshes. The invention also provides a preparation method of the ceramic tile with a dry particle glaze-decorated surface, which sequentially comprises the following steps: (a) producing a blank by using a press; (b) drying the blank by using a drying kiln; (c) applying the base glaze; (d) applying the cover glaze; (e) printing; (f) applying the dry particle glaze; (g) firing; (h) polishing; and (i) edging. The ceramic tile shows unique third dimension of light in the change of different lights and different heights so that the decorative pattern of the ceramic tile has a perfect texture; and moreover, the ceramic tile has good effects in slip resistance, wear resistance, dirt prevention and the like. The preparation method is easy to operate, the cost is low, and the product has a good effect.

Thin elongated bamboo chips are produced and then are softened and dried. The softening of the chips reduces void spaces which uses less glue and produces stronger members. The chips are then joined together with glue under pressure to form a bamboo board. By varying the depth and length of the chip form, the member produced can form a board, chipboard, beams, or columns of any size. Additional boards may be produced and glued together to form a larger board, beam, or column. Several chipboard layers fabricated in large sheets and glued together will form ‘multi-ply bamboo’, a bamboo substitute for plywood. Once cured, the member is kiln dried and sealed for moisture. The resulting bamboo member's strength and geometrical form is stable and consistent enough to be used as a structural grade member for frames, homes, buildings, and furniture.

The invention relates to a method for manufacturing a wear-resistant antiskid dry-particle ceramic tile, which comprises the following steps: (1) forming a ceramic tile plane matrix and carrying out pattern decoration; (2) preparing dry particles with wear-resistant and antiskid properties; (3) mixing the wear-resistant antiskid dry particles, flashing dry particles and transparent dry particles according to a certain proportion for distribution; (4) applying the mixed dry particles to the surface of a decorative glazed body and spraying a temperature-resistant fixing agent; (5) conveying the obtained product to a roller kiln for firing and preparing the finished product of the ceramic tile through subsequent processes. According to the method for manufacturing the wear-resistant antiskid dry particle ceramic tile, the dry particles with good wear resistance are mixed with the transparent dry particles and the flashing dry particles, a dry powder distribution mode is adopted and the wear-resistant antiskid dry particles are bulged due to different melting performance of various dry particles in the firing process, so that the problems of wear resistance of the surface and thickness of a wear-resistant layer are solved; by distributing the transparent dry particles, a decorative pattern has a stereoscopic decorating effect under the covering of a glass layer, so that unification of wear-resistant and antiskid properties and decoration of the ceramic tile is achieved.

The invention discloses a sodium chloride-free environment-friendly coal-saving combustion improver special for cement, which aims to solve the technical problem of eliminating the damage of sodium chloride to furnaces, kiln bodies and the atmosphere. The combustion improver consists of an industrial grade finished product raw material, industrial residue, and a tailing material, and contains a barium compound, boride, carbonate, a chromium compound, fluoride, a magnesium compound, a manganese compound, nitride, a molybdenum compound II, a zirconium compound, industrial residue or tailings of rare earth, oxide and dicyclopentadienyl iron. Compared with the prior art, the combustion improver completely cancels the sodium chloride, furthest reduces the content of Cl<-> in ingredients, eliminates the damage of the sodium chloride to the furnaces, the kiln bodies and the atmosphere, reduces the damage of causing acid rain to the atmosphere, increases a plurality of metal acids, oxygen compounds and rare earth minerals, contains waste residue, ensures that the combustion is controllably performed, improves combustion environment, improves the combustion efficiency of fire coal, reduces energy consumption, prolongs the service life of equipment, and protects the environment.

The present invention is the production process of environment protecting water and air permeable brick in roller kiln. The brick is produced with waste and has excellent noise absorbing performance, excellent water and air permeability, high safety and technological performance.

The invention provides a preparation method for core-shell type silicon dioxide-coated nanometer calcium carbonate, which comprises following steps: adding silicate in calcium carbonate suspension pulp; stirring and mixing using emulsion pump; introducing kiln gas with CO2 for carbonization until the pH is 6.5 to 7.0; heating to 60 to 90 DEG C; adding coating agent for coating treatment; the product is obtained after the coated pulp is filtered and the filter cake is dried. The preparation method for core-shell type silicon dioxide-coated nanometer calcium carbonate has the advantages of improving the acid resistance of nanometer calcium carbonate since silica sol precipitated through hydrolysis is coated on the surface of nanometer calcium carbonate, improving dispersion of the product in polymer due to surface treatment using coupling agent and organic acid, good acid resistance and dispersion, greatly improving physical and chemical properties, and felicitating industrial production with simple operation.

The invention discloses a composite fire-proof material with high refractoriness under load for coke ovens. The preparation method of the material comprises the following steps of: evenly mixing and crushing 40%-60% of Al2O3, 15%-30% of SiC micro powder, less than 2% of Fe2O3, 5%-10% of Si micro powder and 1%-3% of cement as an additive; adding 3%-5% of Al(H2PO4)3 as an adhesive and stirring and mixing evenly; and pouring the mixture to a working region in 20-30 minutes. The furnace-building process comprises the following steps of: cleaning a kiln, measuring, molding, positioning and supporting a mould, adding materials, pouring and correcting, cleaning, starting for warming up and testing. The coke ovens newly built by pouring is characterized in that the top of the chamber of the furnace is fan-shaped, the chamber of the furnace is built by on-site seamless overall vibration pouring according to the process above with the furnace-building materials above, afterheat of the furnace can be recycled for power generation and no chemical residues exist. The furnace is short in charring time and higher in coke recovery and can be started and used at any time between the normal temperature and 1550 DEG C.

The invention discloses a whole-body polished porcelain tile having three-dimensional stone texture and a production method of the tile. The tile comprises a whole-body colored blank layer, a ground coat layer, a pattern decoration layer, a three-dimensional stone texture layer and a surface decoration layer. The production method comprises steps as follows: 1) a whole-body colored blank is prepared; 2) the ground coat layer on the blank surface is formed; 3) the pattern decoration layer is formed; 4) ink or glaze having a dent effect is applied to the pattern decoration layer, a pattern corresponds to pattern texture of the decoration layer, and the three-dimensional stone texture layer is formed; 5) the surface decoration layer is formed; 6) a roller kiln is formed through sintering; 7) a finished product is obtained through polishing, edging and packaging. The surface color of the product produced with the scheme is integrated with the color of the blank, the stone texture changes naturally with the pattern texture of the product, the texture layer is protected by the surface decoration layer, and the tile has the decoration effect of natural stone. Properties of the product are superior to those of the natural stone, mining of the natural stone can be effectively reduced, and the natural environment is protected.

The invention discloses a porous ceramic material and a preparation method thereof. The invention comprises 5-50 portions of ceramic polishing waste, 20-50 portions of ceramic waste, 0-20 portions of ceramic clay, 0-15 portions of high temperature sand, 0-15 portions of low temperature sand by weight; the raw materials are mixed and water of 10-60 percent of the total weight of the raw materials is added, then 0-3 portions of grinding aids and 0-3 portions of binders are added and wet ball-milling is carried out; the mixture is pressed into a ceramic brick body and the invention can be obtained after the ceramic brick body is put into a ceramic roller kiln to be burned. The invention makes full of the ceramic waste and self foaming mechanism of the polishing brick waste, needs no foaming agent and can produce the porous ceramic material with light weight, low thermal conductivity and high strength. The invention has simple technique, the operation is easy to be controlled and the product has the functions of insulation, heat insulation, sound proof and fire proof, etc.

The use of organic waste/mineral by-product mixtures as raw materials in the manufacture of cement clinker; as alternative or supplemental fuel sources for heating a kiln used in a cement clinker manufacturing process; and, to reduce nitrogen oxide (NO_x) emissions generated during cement manufacturing processes are disclosed.

The invention discloses a tourmaline integral honeycomb ceramic and the ceramic mainly comprises the following components by weight percent: 10-75% of tourmaline, 2-20% of clay, 2-40% of fluxing agent and 1-30% of auxiliary material. The preparation method of the tourmaline integral honeycomb ceramic comprises the following steps: adding tourmaline, clay, the fluxing agent, the auxiliary materialand a dry powder forming agent in a medium mill in proportion to grind and mix so as to obtain a mixture, then adding a appropriate amount of water and a liquid forming agent in the mixture to knead and obtain mud, granulating the mud, aging, extruding to obtain mud sections, moulding the mud sections, performing microwave forming, drying to prepare a semi-finished product, and placing the semi-finished product in a kiln at 500-850 DEG C to fire. Compared with the existing tourmaline products, the characteristics of the existing honeycomb ceramics, namely large specific surface area and porescan be ensured, the effect of tourmaline can be extremely exerted, the amount of tourmaline can be greatly reduced and the ceramic has good energy-saving effect. The energy consumption of the tourmaline integral honeycomb ceramic is one tenth of the energy consumption of the tourmaline ball fired at the same temperature.

The invention discloses a system for drying wood, which comprises a drying kiln, a humidity generator, a heat energy recoverer, a filter and a control system, wherein the drying kiln is provided with a gas inlet and a gas outlet; high-temperature waste gas discharged out of the gas outlet of the drying kiln is filtered by the filter, then is input to the heat energy recoverer, and is discharged out after performing heat exchange with low temperature gas from the humidity generator in the heat energy recoverer, and the heated low temperature gas output by the heat energy recoverer is sent into the gas inlet of the drying kiln through a pipeline; and the control system controls the work of the drying kiln, and controls the humidity of the low temperature gas output by the humidity generator according to the temperature, the humidity and the moisture content of the wood to be controlled in the drying kiln so as to control the humidity of the gas input in the drying kiln. By setting the humidity generator and the heat energy recoverer, the system optimizes the drying quality of the wood and minimizes the energy consumption; and simultaneously, because the working gas is used circularly, the waste gas is prevented from being discharged to the atmosphere to pollute the environment.

Disclosed is a comprehensive recovery method for a complex material containing arsenic and valuable metal slags, comprising passing the materials containing arsenic through a primary rotating kiln to volatilize the arsenic, and through a secondary rotating kiln to purify the arsenic, so that an arsenic product containing 99.5% As 2 O 3 is produced; reduction smelting slags from the primary and secondary rotating kilns in a blowing volatilization furnace, with the resultant highly arsenious dust being returned to the primary rotating kiln for treatment, and the slags being used as a raw material in a cement manufactory and a raw material for zinc after undergoing strongly reductive dearsenization and volatilization of zinc in a fuming furnace; the resultant alloy containing arsenic being subjected to basic oxidizing refinement, and the oxidized/refined alloy after dearsenizations containing Pb > 72%, Sb > 12%, As 2 O 3 <0.02%, being sold as a lead-antimony alloy; the basic slags from the refinement, containing As 2 O 3 10%-20%, being subjected to crushing, dissolution in base, and filtration, with the slags thereof being returned to a blowing volatilization furnace for treatment; precipitating tin from the basic solution containing tin and arsenic by blowing in CO 2 , with the filtered tin oxide being sold as a raw material for tin; adding Ca(OH) 2 into the basic filtrate containing arsenic to precipitate arsenic, returning the filtered slags of calcium arsenate to the primary rotating kiln for treatment, and evaporating the remaining basic solution to concentrate and recover the base.

A full-automatic production line for the insulating building blocks made of polyphenylene concrete is composed of raw materials proportioning stirrer, shaping machine, pallet supplying unit, two program-controlled kiln cars, curing kilm consisting of precuring kiln for the moulds of building block and curing kiln for building blocks, demoulding unit, mould pushing unit, pallet-building block separator, stacking system, two pallet-raising unit, two pallet-lowering unit and control system.