38results about How to "Firing speed is fast" patented technology

The invention discloses a method for preparing micro-pore firework powder capable with improved the fire ignition and transfer properties, which comprises the following steps of: firstly, dissolving materials, emulsifying, foaming, balling, then removing a solvent, separating the materials, and finally, drying; when the materials are dissolved, emulsified and foamed, adding a water solution of a sensitizing agent; and adding a water solution containing a sensitizing agent and a dispersing agent as a dispersion medium in the balling process, wherein the concentration of the water solutions of the sensitizing agents is the same. The used sensitizing agents can adopt the nitrate, the perchlorate or the mixture thereof of alkali metal or alkali earth metal, and the addition proportion is 0.2 to 10 percent of the mass of raw powder. The sensitizing agents are added in the forming process of the micro-pore firework powder by the form of the water solutions, an extra procedure is not added, a forming medium is recycled in the technological process, environmental pollution and material wastage can not be caused, the distribution of the sensitizing agents in an obtained sample of a finished product is more uniform, and the ignition capability and the normal-pressure fire transfer speed are both enhanced obviously.

A self-cleaning trigger connector system resulting in increased reliability comprising a self-cleaning trigger connector and a trigger mechanism housing. The self-cleaning trigger connector is designed with specific contact points to prevent over-travel of the trigger bar when operating in cooperation with the trigger of the firearm. The self-cleaning trigger connector has a first at least one elongated through hole of a predetermined length that allows for a lighter trigger pull and defines a lubrication reservoir. The trigger mechanism housing comprises a second at least one elongated through hole. Debris that accumulates from the interaction between the trigger bar and the self-cleaning trigger connector passes through the first and second at least one elongated through holes. After passing through the first and second at least one elongated through holes, the debris then falls downwardly through a cavity adjacent to the firearm magazine well.

The invention discloses an energy-saving four-duct once-setting firing tunnel kiln, which comprises a burning kiln body and a drying kiln body, wherein the burning kiln body and the drying kiln body are provided with a kiln chamber respectively and are communicated through a heat delivery draught fan; the two sides of the kiln chamber of the burning kiln body are symmetrically provided with upper and lower duct layers respectively of which the upper duct layer serves as a residual heat duct and the lower duct layer serves as a draught duct; a plurality of air brakes are arranged in the residual heat duct and the draught duct and are communicated with the kiln chamber of the burning kiln body respectively; the two sides of the kiln chamber of the drying kiln body are also symmetrically provided with the upper and lower duct layers respectively of which the upper duct layer serves as a dehumidifying duct and the lower duct layer serves as a heat delivery duct; the dehumidifying duct is provided with a dehumidifying fan; and a plurality of air brakes are arranged in the dehumidifying duct and the heat delivery duct and are communicated with the drying kiln body respectively. The tunnel kiln can improve yield, reduce the coal consumption and power consumption, reduce the emission of carbon dioxide, ensure difficult kiln collapse when drying wet blanks and easy control in burning and improve the qualification rate of the product.

The invention discloses a method for sensitizing microporous smokeless firework explosive, which comprises the following steps of: dissolving scrapped military smokeless explosive containing nitrated cellulose into a solvent to form macromolecular sol, emulsifying and foaming the sol to form paint emulsion, dispersing the paint emulsion into a non-solvent medium under stirring action to form balls, then driving the solvent to obtain explosive particles suspended in the solution and provided with micropores, separating the explosive particles suspended in the solution and provided with micropores, sensitizing the explosive particles separated from the solution of the suspended explosive particles and provided with micropores, and drying the explosive particles to obtain an explosive particle finished product, wherein the sensitizing mode is to add a sensitizing agent into the explosive particles separated from the solution of the suspended explosive particles in a form of aqueous solution or solid. The sensitizing process improves the fire transfer speed of the explosive particles and improves the ignition performance thereof, and the fire transfer speed of the explosive particles is improved by 10 to 200 percent under a normal pressure condition.

The invention discloses jun porcelain fancy glaze and a preparation technology thereof. Prepared fancy glaze porcelain has a high yield, manufacturing cost is reduced, and the prepared fancy glaze porcelain has very high artistic value and economical value. Used spodumene can react with kaolin and quartz in a firing process to form a little mullite crystal, and the mullite crystal can greatly improve the mechanical strength of jun porcelain; the spodumene is added into a formula, so that a firing speed is improved, and product crack is avoided; thus, energy consumption is reduced, a yield is about 85%, and the manufacturing cost is reduced.

At present, in China, the existing methods for producing quicklime by sedimentary rock calcination mainly adopt a coal-fired energy-saving machinery shaft kiln, a gas-fired energy-saving machinery shaft kiln, a coal-fired (powder-injection) rotary kiln and a gas-fired rotary kiln. The existing methods have limitation. The invention provides a novel mixed-fuel calcination limekiln. The novel mixed-fuel calcination limekiln can produce quicklime simultaneously by gas and coal calcination of sedimentary rock. The novel mixed-fuel calcination limekiln has the advantages of manufacture easiness, air distribution reasonability, combustion easiness, advantage and disadvantage complementation, and energy-saving easiness. The novel mixed-fuel calcination limekiln provides a novel and feasible scheme for energy saving, environmental protection, production cost reduction and product quality improvement of sedimentary rock calcination-based production of quicklime at home and abroad.

A microcrystal glass compounded vitrified plate is composed of surfacial layer (microcrystal glass) and bottom layer (vitrified tile), and is prepared through preparing raw materials, die pressing, smelting, vitrifying, cutting edge, coarse grinding, further grinding, fine grinding, coarse polishing, fine polishing, chamfer, drying and classifying. Said vitrified tiles are prepared from clay, quartz, feldspar sand, and talc. Said microcrystal glass is prepared from quartz, feldspar and calcite. Its advantages include high adhesion, high strength and lustre, moderate cost, and high antiwear and anticorrosion performance.

The invention discloses a jun porcelain celeste blue glaze which is prepared from the following raw materials in parts by weight: 32-40 parts of melilite, 14-18 parts of quartz, 10-14 parts of calcite, 10-14 parts of herb drug, 4-6 parts of spodumene, 3-5 parts of talc, 0.5-1.5 parts of ferric oxide, 4-6 parts of copper ore, 0.5-1.5 parts of tin oxide and 6-10 parts of wood ash. A preparation method for the jun porcelain celeste blue glaze comprises the following steps: (1) crushing the raw materials, mixing and putting into a ball mill for milling, adding water till the mass concentration ofthe glaze reaches up to 56-58%, wetly milling for 6-8 hours and using a 200-300 mesh sieve for sieving the wetly milled slurry, thereby acquiring glaze slip; (2) soaking the blank into the glaze slipfor 1-2 times; (3) sintering under the sintering temperature of 1260-1290 DEG C.

The invention relates to a high frequency low-loss glass ceramic that is sinterd rapidly under low temperature and a production method thereof. The glass ceramic is sintered by silicon, boron, borosilicate glass, and nucleating agent and agglomerant. The ingredients provided by the invention can realize the low-temperature smelting of the calcium, silicon, boron and borosilicate glass, the glass materials can be sintered at about 680 DEG C and the sintered body has excellent dielectric property (Epsilon[r] is 6-8 and the tanDelta is less than 0.000525 MHz).

The invention provides a preparation method for a 95% resistor ceramic substrate raw material capable of being rapidly sintered at a low temperature of 1250 DEG C. The raw material is prepared from 94 to 96 wt% of a-alumina (Al2O3), 2 to 3 wt% of barium pyroborate (BaO.2B2O3), 1.5 to 3 wt% of manganese oxide (MnO2), 1 to 1.5 wt% of magnesium carbonate (MgCO3) and 0.5 to 1.5 wt% of titanium oxide (TiO2). The raw material provided by the invention has the characteristics of a low sintering temperature, a fast sintering speed and obvious energy saving and emission reduction effects, has thermal conductivity of 21 to 25 W/m.K and density of 3.75 g/cm<3>, has the advantages of high dielectric strength and high breaking strength, totally satisfies requirements of performance of a subminiaturized resistor and is mainly used for production of electronic ceramic products like a subminiaturized 95% resistor ceramic substrate, a 95% semiconductor integrated circuit package shading ceramic substrate and an electronic Nixie tube alumina ceramic plate.

A trigger linkage mechanism for use in toy gun includes: a trigger pivoted to a gun frame and formed with a push block; a linkage member having one end formed with a first pivotal part and the other end formed with a second pivotal part. The linkage member is formed with an abutting part disposed between the two pivotal parts and abutted against the push block; a pull member pivoted to the second pivotal part and formed with a pawl part capable of being correspondingly buckled with the buckle part; a first recovery spring clamped between the gun frame and the linkage member; and a second recovery spring clamped between the linkage member and the pull member. Accordingly, the rotation radian and speed of the pawl part is able to be controlled and adjusted.

The invention discloses an admixture for dry-process cement kiln clinker production, and belongs to the technical field of building material admixtures. The admixture disclosed by the invention is prepared from the following raw materials in parts by weight: 3-10% of rare earth, 20-40% of fluorite, 3-10% of nano metal powder, 30-60% of gypsum, 5-10% of modified steel slag powder and 1-5% of glycerol. The rare elements are hybridized and doped in clinker combustion, so that the eutectic point can be reduced, and the effects of destroying the crystal structure and improving the activity of the clinker are achieved. Fluorite and gypsum are added to achieve a mineralization effect, and metal nano powder is doped to catalyze clinker combustion, so that the firing speed is increased. The nano metal powder and the modified steel slag are matched with each other, so that efficient combustion of the clinker is jointly realized. The additive disclosed by the invention is 0.6-1% in doping amount,can remarkably improve the yield of a raw mill, improve the strength of clinker, fix sulfur and denitrate, comprehensively reduce the cost and realize efficient reutilization of waste resources, andhas wide economic benefits and social benefits.

The invention discloses a Jun porcelain pea green glaze, which is prepared from the following raw materials in parts by weight: 28 to 36 parts of melilite, 18 to 24 parts of glaze stone, 14 to 18 parts of quartz, 8 to 12 parts of calcite, 4 to 6 parts of spodumene, 4 to 6 parts of talc, 1.5 to 2.5 parts of iron ore, 3 to 5 parts of Datong soil, 0.5 to 1.5 parts of tin oxide and 3 to 5 parts of wood ash. The preparation method of the Jun porcelain pea green glaze comprises the following steps: (1) smashing and mixing the raw materials, placing into a ball mill for ball milling, adding water tomake the mass concentration of the glaze reach 56-58%, performing wet-milling for 9-10 hours, and screening, through a 200 to 300 mesh, the slurry subjected to the wet milling to obtain glaze slip; (2) soaking a green body in the glaze slip for 1 or 2 times; (3) firing with the firing temperature of 1280 to 1300 DEG C.

The present invention discloses a rotary kiln and method for producing calcined color frit therewith. The rotary kiln includes inclined lined cylinder with material feeding port in the head, drive system, flue with chimney, temperature metering unit inside the cylinder, heat source in the tail and discharge port in the tail. During production, the mixed raw material is fed to the inner hearth and rolled from head to tail while the cylinder is rotated and the high temperature gas flows from tail to head, so that the material is preheated and high temperature calcined to become color frit, which is discharged from the tail and cooled. The present invention has high yield and low cost.

The invention relates to the field of foamed ceramics, and particularly provides a preparation method, production system and application of a foamed ceramic and the foamed ceramic. The preparation method of the foamed ceramic comprises the steps that firstly, foamed ceramic powder is subjected to biscuit firing and then fired to obtain the foamed ceramic. The method is scientific and reasonable inprocess, structural water, combined water, organic matter, carbonate, sulfate and other substances in the powder can be decomposed in the biscuit firing stage, gas which is not conducive to the production of the foamed ceramic is fully discharged, the firing process of the material can be quickly completed, the method is beneficial to increasing the firing speed, increasing the yield and ensuringthe product quality, and moreover, the thicker product can be produced.

The invention belongs to the technical field of ceramic membranes, and particularly relates to a disc type ceramic membrane and a one-time forming method thereof.The one-time forming method specifically comprises the following steps that firstly, ceramic membrane supporting body raw materials are laid on a mold, and a first supporting layer is formed; 2, a loose body is laid on the first supporting layer, and the loose body comprises combustible materials; 3, laying a ceramic membrane support body raw material on the first support layer and the loose body to form a second support layer; 4, performing dry pressing to form a ceramic membrane semi-finished product; 5, drying and calcining the ceramic membrane semi-finished product to form a ceramic membrane support body finished product; and 6, coating the surface of the support body, drying and calcining to form a ceramic membrane finished product. By adopting a support body integrated dry pressing molding technology, the whole structure of the disc-type ceramic membrane support body is firmer, and the service life of the ceramic membrane is prolonged; deformation of the ceramic membrane is integrally reduced, the sintering speed is high, the filtering effect of the ceramic membrane is better, and the cost is lower.

The invention discloses a cement clinker production admixture, and belongs to the technical field of building material admixtures. The admixture is prepared from the following raw materials in percentage by weight: 1-5% of ferric chloride, 1-10% of ferric sulfate, 5-10% of urea, 3-5% of glycerol, 5-10% of composite anhydrous sodium sulphate, 5-10% of ammonium nitrate and the balance of water. Thecombustion efficiency and the cement clinker quality can be effectively improved by adding 1.4-1.6 per mill of the admixture disclosed by the invention into the pulverized coal mill. The admixture, urea and ammonium nitrate play a role in denitration and forging assistance, glycerin plays a role in increasing heat of the grinding aid, and ferric chloride catalyzes calcination of the cement clinker. Besides, anhydrous sodium sulphate and modified boron nitride achieve synergistic interaction, the purposes of energy conservation, emission reduction and efficiency improvement are achieved together, and the high-strength cement clinker is obtained. Meanwhile, the technical purposes of accelerating the firing speed, increasing the yield, saving the coal consumption, fixing sulfur, denitrating and reducing the cost are achieved, and wide economic benefits and social benefits are achieved.

The invention discloses full-penetration polished ceramic tiles and a preparation method thereof. The full-penetration polished ceramic tiles are mainly prepared from the following components in partsby weight: 22 to 42 parts of ball clay, 12 to 18 parts of soda feldspar, 5 to 12 parts of ground quartz, 8 to 15 parts of wollastonite, 4 to 7 parts of water milled potassium feldspar powder, 1 to 4parts of sodium silicate, 0.4 to 0.8 part of water reducing agent, 0.3 to 0.6 part of blank enhancing agent and 44 to 70 parts of de-ionized water. The preparation method comprises the following steps: preparing raw materials, carrying out ball milling, spraying and granulating, punching and molding, calcining and polishing. According to the full-penetration polished ceramic tiles prepared by thepreparation method, the problems of traditional polished tiles that the surface level, stereoscopic performance and stone-imitating effect are fuzzy and unclear are solved; application of ultra-penetration materials is researched and developed so that the stone-imitating effect is more vivid; meanwhile, the full-penetration polished ceramic tiles have relatively good anti-penetration performance and color and luster; the preparation method is simple and is suitable for industrial production.

The invention discloses a cooker burner cap which comprises an outer ring burner cap body. A plurality of main fire holes are formed in the outer ring burner cap body, a fire transmission groove is formed in the upper surface of the outer ring burner cap body, and the two ends of the fire transmission groove extend to the inner wall and the outer wall of the outer ring burner cap body respectively; and the stove burner cap further comprises a top cover which covers the top of the fire transmission groove and is detachably connected with the fire transmission groove, and the top cover and the fire transmission groove jointly form a fire transmission channel with the closed top. According to the cooker burner cap provided by the invention, the detachable top cover is arranged at the top of the fire transmission groove, so that the stove burner cap has a hidden fire transmission manner and an open fire transfer manner at the same time; the interior of the burner cap is convenient to clean due to the design of the detachable top cover; in addition, the top cover is connected with an inner ring burner cap body to conveniently position the inner ring burner cap body; and the fire transmission success rate is increased through the arrangement of fire transmission holes, one end of each communicating hole and one end of the fire transmission groove are tangent to the corresponding fire transmission hole, so that fire transmission of the stove burner cap is faster and more effective, the fire transmission success rate and the fire transmission speed from an inner ring to an outer ring of the stove burner cap are remarkably increased, and practicability is high.