287 results about "Borax" patented technology

The invention relates to the technical field of electrode paste, in particular to electrode paste for a submerged arc furnace and a preparation method of the electrode paste. Comprising three-level grain size distribution anthracite aggregate which is electrically calcined at high temperature and modified by a KH-550 silane coupling agent, a modified silicon carbide whisker and boron-doped graphene-like carbon nitride composite filler, a maleic anhydride-mediated compatible medium-temperature pitch-polyborosiloxane binder and a graphite powder-borax functional additive. A step-by-step mixing and two-stage sintering process is adopted in the preparation process, a covalent bond interface bridging structure is constructed through the coupling agent, the composite dispersing agent regulates and controls the multi-dimensional network distribution of the filler, and the process synergistically improves the compactness and the interface bonding force of the green body. The electrode paste is firm in interface bonding, can form a ceramic protective phase at a high temperature, has excellent conductivity and mechanical strength, and prolongs the service life of the electrode paste for the submerged arc furnace.

The invention provides a zinc-copper-nickel-copper smelting deslagging agent and a preparation method and a use method thereof. The zinc-copper-nickel-copper smelting deslagging agent comprises the following raw materials in percentage by mass: 5-15% of calcium fluoride, 20-30% of sodium carbonate, 5-15% of sodium fluoride, 10-20% of sodium hexafluoroaluminate and the balance of borax. Compared with the prior art, the zinc-copper-nickel-copper slag remover prepared by mixing the raw materials can effectively reduce impurities to be less than 0.14% of Fe, less than 0.005% of Pb and less than 0.003% of Si in the smelting process, the impurity components are obviously reduced, the number of times of component adjustment and unqualified sampling is reduced, impurities mixed in a casting blank are reduced, and finally the metal purity and the casting quality are improved. Meanwhile, loss of zinc and nickel is reduced to the maximum extent; and adverse effects on the zinc-copper-nickel alloy are avoided.

The invention belongs to the technical field of hydrogel preparation, and discloses a biocompatible self-healing photocuring hydrogel and a preparation method and a use method thereof.The biocompatible self-healing photocuring hydrogel is prepared by adding an ultraviolet light initiator and sodium chloride into a polyvinyl alcohol aqueous solution, evenly mixing, then adding acryloyl glycinamide powder to enable the acryloyl glycinamide powder to be dissolved, then adding a crosslinking agent, and evenly mixing to obtain the biocompatible self-healing photocuring hydrogel. Adding water into the mixed solution, then removing bubbles, then adding methacrylated gelatin and dissolving, and then removing bubbles to obtain a biocompatible self-healing photocuring hydrogel mixed solution; adding a borax solution prepared from sodium tetraborate and deionized water into the obtained biocompatible self-healing light-cured hydrogel mixed solution, and after the biocompatible self-healing light-cured hydrogel mixed solution and the borax solution are subjected to cross-linking reaction, removing bubbles to obtain the biocompatible self-healing light-cured hydrogel. The biocompatible self-healing photocuring hydrogel has excellent mechanical properties and self-healing ability, and is suitable for application scenes such as biosensing, wound repair and tissue engineering.

According to the low-temperature high-durability magnesium phosphate cement and the preparation method thereof, dead burned magnesia powder serves as a core gelling base material and can provide a large amount of active Mg < 2 + >, ammonium dihydrogen phosphate can provide an acid environment and PO4 < 3->, the dead burned magnesia powder and the ammonium dihydrogen phosphate are subjected to an acid-base neutralization reaction in the presence of water to generate ammonium magnesium phosphate hydration products, and the magnesium phosphate hydration products are subjected to a low-temperature high-durability magnesium phosphate cement. The products are interwoven to form a hardened body framework, and a strength foundation is laid for cement; borax is adopted as a key retarder, borate ions generated after the borax is dissolved in water can be adsorbed on the surfaces of dead burned magnesia powder particles, a magnesium borate complex film is formed, the dissolution of Mg < 2 + > and the reaction of PO4 < 3-> are hindered, the cement setting time is effectively delayed, and the construction requirements are met; and the borax can also refine the crystal structure of a hydration product, reduce the porosity, improve the impermeability and the volume stability of a hardened body, and avoid shrinkage cracking.

The invention relates to the technical field of graphene modification, and particularly discloses a preparation method of zinc borate modified graphene, which comprises the following steps: ultrasonically dispersing graphene in water to obtain 0.5-1g / L graphene dispersion liquid; adding a dispersing agent, a 0.08-0.12 mol / L borax aqueous solution and ethanol into the graphene dispersion liquid, uniformly mixing, and then dropwise adding a 0.08-0.12 mol / L zinc sulfate aqueous solution under the stirring action; then carrying out a reaction through microwave heating at the temperature of 50-70 DEG C under the power of 100-300 W for 20-30 min; after the reaction is finished, filtering, washing and drying to obtain zinc borate modified graphene. According to the preparation method of the zinc borate modified graphene, provided by the invention, a uniform, complete and compact shell layer can be formed on the surface of the graphene through in-situ self-assembly, so that the surface of the graphene is textured, and the dispersion uniformity and dispersion stability of the graphene in an oil phase system are improved.

The invention relates to the technical field of building materials, in particular to an energy-saving and environment-friendly recycled concrete pipe pile and a preparation method thereof. The recycled concrete is prepared from the following raw materials in parts by weight: 35 to 45 parts of recycled aggregate, 22 to 28 parts of P.O42.5 Portland cement, 6 to 9 parts of magnesium phosphate cement composite admixture, 18 to 22 parts of river sand, 1.0 to 1.3 parts of hydroxylated graphene-chitosan-nano zinc oxide ternary composite modifier, 6 to 8 parts of modified waste tire rubber powder, 0.5 to 0.8 part of basalt fiber and the like. The rubber powder is soaked in a sodium hydroxide solution and then treated with a maleic anhydride grafted polyethylene solution; the metakaolin is prepared by calcining coal gangue; the ternary modifier is prepared by grafting, crosslinking and dispersing; the magnesium phosphate admixture contains light calcined magnesia, ammonium dihydrogen phosphate and borax. The tubular pile is excellent in mechanical and durable performance and high in solid waste utilization rate, carbon emission and production energy consumption are reduced, the cost is reduced, the problems that a traditional regenerated tubular pile is low in strength and poor in environmental protection performance are solved, the tubular pile is suitable for multiple engineering scenes, and economic and environmental benefits are remarkable.

The invention provides a red foamed ceramic wall body material. The red foamed ceramic wall body material is prepared from the following raw material components in parts by weight: 50 to 78 parts of waste glass powder, 0 to 20 parts of fly ash, 10 to 20 parts of magnesium-iron hydrotalcite, 10 to 20 parts of limestone and 2 to 5 parts of borax. According to the invention, magnesium iron hydrotalcite is subjected to in-situ decomposition to generate pleonaste, the red color of ferric ions is retained, the red foamed ceramic is prepared, and black ferrous oxide or ferroferric oxide is prevented from being generated.

The invention discloses a colorless medium borosilicate medicinal glass tube and a preparation method thereof, and belongs to the technical field of glass products. The medicinal glass tube comprises the following raw materials in parts by weight: 550-650 parts of quartz sand, 60-70 parts of aluminum hydroxide, 100-250 parts of borax pentahydrate, 5-15 parts of sodium nitrate, 15-30 parts of sodium carbonate, 1-5 parts of sodium fluosilicate, 10-15 parts of calcite, 5-10 parts of barium carbonate, 5-10 parts of potassium carbonate, 10-20 parts of a compound clarifying agent and 400-500 parts of medium borosilicate glass slag. The quartz sand and the borax pentahydrate in a high proportion provide a basis for the high borosilicate glass, the chemical stability of the glass is remarkably improved, the glass can resist acid and alkali erosion and is very suitable for storing various medicines, and in addition, substances such as aluminum hydroxide, calcite, sodium nitrate, sodium carbonate and sodium fluosilicate are added, so that the thermal stability and the mechanical property of a glass product are improved.

The application discloses a cast iron enamel high-temperature matte glaze without fluorinated salt and nitrate, and a preparation method and application thereof, and belongs to the technical field of enamel. The matte glaze is prepared from quartz, borax pentahydrate, titanium dioxide, sodium carbonate, calcium carbonate, barium carbonate, aluminum oxide, sodium tripolyphosphate, potassium carbonate and lithium carbonate according to specific mass proportions. The preparation comprises raw material mixing, smelting at 1300+ / -10 DEG C under a pure oxygen environment, and rapid cooling after wire drawing detection of the smelting state. The matte glaze completely avoids the use of fluorinated salt and nitrate, eliminates the problems of fluoride emission and environmental protection equipment blockage from the source, and the fluorine content of the product is not detected through detection, thereby meeting the limit value requirements of the EU REACH regulation. Meanwhile, the matte glaze has good enamel surface, excellent firing performance and matte performance, is suitable for a cast iron substrate, has a firing temperature of 780-800 DEG C, and can be used for the production of green and environmentally-friendly enamel products.

This invention discloses a fissure grouting material, its preparation method, and its application, belonging to the technical field of radiation protection engineering materials. By mass, its raw materials include: 45-60 parts barite sand, 25-35 parts sulfoaluminate cement, 8-20 parts borax, 2-5 parts boron carbide powder, 1-5 parts nano-gadolinium oxide, 5-15 parts lithium slag powder, 3-8 parts barium sulfate whiskers, 3-8 parts polymer emulsion, 0.5-1.5 parts water-reducing agent, 0.1-0.5 parts stabilizer, and 18-25 parts water. This invention provides high-density gamma-ray shielding through barite sand, achieves all-round neutron protection through a quaternary composite neutron absorption system, enhances the material's toughness and shielding effect through barium sulfate whiskers, and ensures high fluidity and interfacial bonding strength of the grout through the polymer emulsion. This material is particularly suitable for sealing and shielding fissures in the surrounding rock of radioactive tunnels, possessing advantages such as excellent shielding effectiveness, good construction performance, high volume stability, and long-term durability.

The invention provides a inhibited foam material as well as a preparation method and application thereof, and relates to the technical field of foam material preparation. The inhibition foam material comprises the following components in percentage by mass: 10%-20% of cement, 1%-1.2% of fly ash, 1.5%-2% of an anionic surfactant, 1%-1.2% of a foaming agent, 0.3%-0.4% of a thickening agent, 3%-4% of a foam stabilizer, 0.05%-0.07% of borax, 0.1%-0.3% of gluconic acid-delta-lactone, 0.1%-0.2% of acid, 4%-5% of a dispersing agent, 4%-5% of a water reducing agent and the balance of water, and the inhibition foam material is high in compressive strength and good in plugging, inhibition and fire prevention and extinguishing effects.

The invention provides a phosphogypsum acid-excited geopolymer cementing material and a preparation method thereof, and relates to the technical field of cementing material preparation. The gelling material is prepared from the following components in parts by mass: 12 to 14 parts of phosphogypsum, 28 to 32 parts of metakaolin, 8 to 15 parts of Portland cement, 31 to 34 parts of acid activator, 11 to 14 parts of water, 0.4 to 0.45 part of borax and 1.6 to 2 parts of modified plant fiber. The ardealite acid-excited geopolymer cementing material provided by the invention can be directly utilized without calcining the ardealite, so that a high-temperature process required by dehydration and activation in a traditional gypsum-based material is avoided, energy consumption and carbon emission are remarkably reduced, and good energy-saving and environment-friendly benefits are achieved.

The invention relates to the technical field of building material preparation, and discloses a composite foaming preparation method of a light sound-insulation hollow brick, which comprises the following steps: firstly, preparing a negative coordination precursor solution, forming a complex by using sodium gluconate and borax, and dissolving sodium alginate; performing dry premixing on the lithium salt coagulant, the cement and the mineral admixture; mixing the precursor solution, the dry powder and the prefabricated foam to prepare slurry; after pouring, calcium ions excited by lithium salt are used for replacing borate radicals in the precursor solution, and the slurry is induced to generate rheological mutation in a standing stage, so that bubbles and a hollow structure are locked; and finally, curing and demolding to obtain a finished product. By constructing a negative coordination shielding and ion replacement triggering mechanism, the problems that high-porosity slurry is prone to mold collapse and poor in foam stability are solved, an organic gel network is formed in a matrix, and the acoustic damping performance and mechanical stability of the hollow brick are remarkably improved.

The utility model relates to a kind of sealing devices for ice boron powder packaging, belong to sealing device technical field, including conveying belt, the left and right sides of the lower surface of conveying belt are all provided with support leg, the outside of conveying belt is provided with several limit frame, the back of conveying belt is fixed with support frame by bolt, the upper surface of support frame is equipped with sealing assembly, the right side of the upper surface of support frame is equipped with filter assembly, the sealing assembly includes electric push rod fixed on the upper surface of support frame.The sealing device for ice boron powder packaging, the application of photoelectric sensor realizes the automatic detection of packaging bag position, cooperates electric push rod and motor drive, makes the whole sealing process automation, reduces manual intervention, improves production efficiency, by the elastic effect of spring telescopic link, make heating plate and packaging bag closely adhere, automatically compensate the change of packaging bag thickness, ensure sealing firm, good sealing, effectively prevent ice boron powder from damp and pollution.

The application discloses a cast iron enamel low-temperature ground glaze free of fluorinated salt and nitrate, a preparation method and application thereof, and belongs to the technical field of enamel. The ground glaze is prepared from quartz, zero-water borax, soda ash, potassium carbonate, barium carbonate, potassium feldspar, magnesium carbonate, copper oxide, manganese oxide, aluminum oxide and recycled ternary battery positive electrode material according to specific mass proportions. The preparation comprises raw material mixing, smelting at 1230±10 DEG C under a pure oxygen environment, and rapid cooling after wire drawing detection of the smelting state. The ground glaze completely avoids the use of fluorinated salt and nitrate, eliminates the problems of fluoride emission and environmental protection equipment blockage from the source, the fluorine content of the product is not detected, and the limit value requirement of the EU REACH regulation is met. Meanwhile, by introducing the recycled ternary battery material, the adhesion of the ground glaze is obviously enhanced, the synergistic effect between components is strengthened, other performances are promoted, and resource recycling and cost reduction are realized.

The application discloses a steel plate enamel medium-temperature cobalt-nickel ground glaze free of fluorinated salt and nitrate, a preparation method and application thereof, and belongs to the technical field of enamel. The ground glaze is prepared according to specific mass proportions of quartz, zero-water borax, soda ash, potassium carbonate, calcium carbonate, potassium feldspar, copper oxide, iron oxide and recovered ternary battery positive material iron oxide. The preparation comprises raw material mixing, smelting at 1260±10 DEG C under a pure oxygen environment, and rapid cooling after wire drawing detection of a molten state. The ground glaze completely avoids the use of fluorinated salt and nitrate, eliminates fluorine emission and environmental protection equipment blockage problems from the source, the fluorine content of the product is not detected, and the product meets the limit value requirements of the EU REACH regulation. Meanwhile, by introducing the recovered ternary battery material, the adhesion of the ground glaze is obviously enhanced, the synergistic effect between components is strengthened, other performances are promoted, and resource recycling and cost reduction are realized.

The invention relates to the technical field of thermal insulation materials, and provides a glass wool thermal insulation material and a preparation process thereof, the glass wool thermal insulation material comprises the following raw materials: glass fibers and an adhesive; the glass fiber is prepared from, by mass, 100 parts of waste glass, 6-8 parts of borax, 4-6 parts of quartz sand, 3-4 parts of limestone, 4-6 parts of kaolin, 4-6 parts of flint clay and 1-2 parts of aluminum oxide whiskers. The ratio of the total mass of the quartz sand, the kaolin and the flint clay to the mass of the aluminum oxide whiskers is (7.25-15.5): 1. According to the technical scheme, the problem of low glass fiber strength in a glass wool thermal insulation material in related technologies is solved.

The application provides a grouting material and a grouting material preparation device, the grouting material comprises heavy-burning magnesium oxide, phosphate, borax, superfine fly ash and mixed water; wherein the mass ratio of magnesium and phosphorus of the grouting material is 3; the water-binder ratio of the grouting material is 0.18; the sand-binder ratio of the grouting material is 0.8; the borax content is 4% of the mass of the heavy-burning magnesium oxide; and the superfine fly ash content is 5% of the total mass of the heavy-burning magnesium oxide, the phosphate and the borax. The grouting material provided by the application effectively improves the setting time, early strength performance and fluidity of the grouting material by adding the borax and the superfine fly ash and further limiting the M / P of the grouting material, the borax content, the superfine fly ash content and the temperature of the mixed water, thereby providing a reliable implementation scheme for preparing the grouting material with the fast setting, early strength performance and good fluidity.

The invention belongs to the technical field of stoichiometry, and discloses a nano-silver particle size standard substance and a preparation method thereof, the standard substance is composed of nano-silver particles, a stabilizer, a dispersion medium and a buffer system, the specific composition is as follows: the average particle size of the nano-silver particles is 40-60 nm, the particle size distribution standard deviation is less than 5 nm, and the nano-silver particles are spherical or torispherical; the stabilizer is selected from polyvinylpyrrolidone (PVP) or polyethylene glycol (PEG), the molecular weight of the stabilizer is 10 * 10 < 3 >-40 * 10 < 3 >, and the addition amount of the stabilizer is 5-10 times of the mass of silver; the dispersion medium is formed by mixing deionized water and absolute ethyl alcohol according to the volume ratio of (9: 1)-(8: 2), and the conductivity of the dispersion medium is lower than 1 mu S / cm; the buffer system adopts a boric acid-borax system, the pH is controlled between 8.0 and 9.0, and the buffer concentration is 5mmol / L to 10mmol / L, so that the ionic strength of the dispersion system and the surface potential stability of particles are maintained. And high controllability of the particle size and inter-batch repeatability are realized.

The application discloses a steel plate enamel high-temperature acid-resistant ground enamel free of fluorinated salt and nitrate, a preparation method and application thereof, and belongs to the technical field of enamel. The ground enamel is composed of quartz, titanium white powder, zero-water borax, soda ash, potassium carbonate, calcium carbonate, potassium feldspar, lithium carbonate, copper oxide, iron oxide and recycled ternary battery positive material according to specific mass proportions. The preparation comprises the steps of raw material mixing, high-temperature smelting under pure oxygen condition, wire drawing detection and rapid cooling. The ground enamel is completely free of fluorinated salt and nitrate, avoids fluorine emission and environmental protection equipment blockage problems from the source, the fluorine content of the product is not detected through detection, and the product meets the requirements of the EU REACH regulation. Meanwhile, by introducing the recycled ternary battery material, the adhesion of the ground enamel is obviously enhanced, the synergistic effect between components is strengthened, other performances are promoted, and resource recycling and cost reduction are realized.

The invention discloses an efficient soil total nitrogen digestion material and a preparation method thereof. The material is prepared by taking a porous carrier (such as mesoporous silica and activated aluminum oxide) as a framework, roasting and activating, loading an environment-friendly solid oxidant (such as potassium persulfate and vanadium pentoxide) on the surface and in pores of the porous carrier, taking boric acid or borax as an inert cosolvent, and performing dipping, drying and calcining processes. The core of the invention lies in that the oxidant is highly dispersed and stably anchored on the porous carrier through the cosolvent to form a synergistic catalytic system, so that the digestion reaction efficiency and the material stability are greatly improved. The material can replace a traditional toxic selenium powder catalyst, no toxic gas is generated in the digestion process, the material does not react violently with concentrated sulfuric acid and the like, nitrogen-containing impurities are not introduced into the material, and the material has the outstanding advantages of being efficient, safe, environmentally friendly and reusable and is suitable for rapid and accurate detection of soil total nitrogen.

The invention discloses a preparation method and application of a nickel-molybdenum polyacid-polymer-based self-supporting electrocatalyst with low platinum-carbon loading capacity, and relates to the technical field of electrocatalysts. The preparation method of the electrocatalyst comprises the following steps: weighing raw materials for preparing an electrolyte solution; comprising nickel sulfate, ammonium molybdate, chloroplatinic acid, borax, polyvinyl alcohol and chitosan. Uniformly mixing the raw materials with deionized water to obtain a nickel molybdenum polyacid solution, a borax solution and a PVA-CS solution, obtaining a target electrolyte solution, and soaking the target electrolyte solution with carbon paper; freezing and drying; performing carbonization; the treated carbon paper is used as a working electrode, a saturated calomel electrode is used as a reference electrode, and a graphite electrode is used as an auxiliary electrode; and platinum is electrodeposited on the carbon paper by adopting a cyclic voltammetry electrodeposition method to prepare the electrocatalyst. According to the prepared electrocatalyst, the cost can be reduced, the reaction kinetics of an alkaline solution and alkaline seawater can be improved, the overpotential can be reduced, the stability can be improved, and the alkaline seawater electrolysis process is more economical and efficient.

The application discloses a liquid chromatography filler for polar compound separation analysis and a preparation method and application thereof, and the liquid chromatography filler is a hydrogel formed by polyvinyl alcohol, borax and tannic acid on the surface of silica gel microspheres. The liquid chromatography filler is obtained by modifying a layer of hydrogel formed by polyvinyl alcohol, borax and tannic acid on the surface of silica gel in a physical coating mode, and has the advantages of simple preparation path and convenient operation. Due to the hydrophilic property of the hydrogel and the existence of multiple action sites, the chromatography filler can be used in the separation of various polar compounds such as amino acids, nucleosides / bases / alkaloids and the like, and has excellent chromatography separation performance.

The invention discloses fiber-free seawater and sea sand alkali-activated ultrahigh-strength concrete cured at normal temperature. Solid potassium carbonate and solid sodium metasilicate are used as composite excitants, under the condition that fibers are not doped, seawater and sea sand are used as water sand for mixing, industrial solid waste slag and silica fume are used as precursor materials, quartz powder is used as a filling material, borax is used as a retarder, the proportion of all raw material components is optimized, and a single-component forming mode is adopted, so that the fiber-reinforced concrete is prepared. The preparation of the ultrahigh-strength concrete can be realized under a normal-temperature sealed curing condition. According to the invention, the problem that the ultra-high strength performance and excellent flow / setting performance of the alkali-activated concrete are difficult to consider is effectively solved, and the popularization and application of the alkali-activated ultra-high strength concrete in actual engineering can be promoted. The technological process is simple, and the production energy consumption and cost are low; seawater and sea sand are used as water sand for mixing concrete, development and utilization of marine resources are promoted, dependence of concrete materials on freshwater river sand resources is reduced, and green and sustainable development of the building industry is facilitated.

The present application relates to the technical field of building ceramics, and particularly relates to a hydrophilic self-cleaning glaze, a hydrophilic self-cleaning ceramic tile and a preparation method thereof, which comprises the following raw materials: zeolite, quartz, calcite, strontium carbonate, barium carbonate, diatomite, kaolin, borax and aluminum phosphate. The hydrophilic self-cleaning glaze provided by the present application can not only realize excellent and persistent hydrophilic self-cleaning property under the premise of reducing production cost, but also is beneficial to ensuring high permeability, high hardness and high wear resistance, and solves the technical problems of poor persistence of hydrophilic self-cleaning property and high production cost in the prior art.

The invention relates to the technical field of borosilicate glass, in particular to high borosilicate glass for a fish tank and a preparation method thereof.The high borosilicate glass is prepared from, by weight, 70-75 parts of high-purity quartz sand, 13-15 parts of borax, 2-3 parts of doping materials, 1.5-2 parts of aluminum oxide, 0.3-1 part of sodium oxide and 0.2-0.5 part of potassium oxide; the water pressure resistance and thermal shock resistance of the high borosilicate glass are improved by adding a doping material which is formed by coating a silicon dioxide layer on the surface of boron nitride and is doped with aluminum oxide, lithium oxide and yttrium oxide into a raw material of the high borosilicate glass, and a potassium nitrate and sodium nitrate mixed molten salt system is used for carrying out ion exchange chemical strengthening, so that the water pressure resistance and thermal shock resistance of the high borosilicate glass are improved. Therefore, the long-term water erosion resistance is met, and meanwhile, the light transmittance can still be kept good.

The application discloses a steel plate enamel low-temperature nickel underglaze without fluorinated salt and nitrate, a preparation method and application thereof, and belongs to the technical field of enamel. The underglaze is prepared from quartz, zero-water borax, soda ash, potassium carbonate, calcium carbonate, potassium feldspar, sodium feldspar, recycled ternary battery positive material and antimony oxide according to specific mass proportions. The preparation comprises raw material mixing, smelting at 1230±10 DEG C under a pure oxygen environment, and rapid cooling after wire drawing detection of the smelting state. The underglaze completely avoids the use of fluorinated salt and nitrate, eliminates the problems of fluoride emission and environmental protection equipment blockage from the source, the fluorine content of the product is not detected, and the limit value requirement of the EU REACH regulation is met. Meanwhile, by introducing the recycled ternary battery positive material, the adhesion of the underglaze is obviously enhanced, the synergistic effect between components is strengthened, other performances are promoted, and resource recycling and cost reduction are realized.

The invention discloses a quick-cooling type low-temperature ice bag without precooling. The quick-cooling type low-temperature ice bag is prepared from, by weight, 10-30 parts of sodium chloride, 10-30 parts of urea, 10-30 parts of potassium chloride, 5-20 parts of sodium sulfate decahydrate, 1-5 parts of borax, 0.5-3 parts of nanometer aluminum oxide, 0.1-1 part of silver chloride and 10-40 parts of ice blocks. The preparation method comprises the following steps: S1, weighing according to the proportion, and sequentially pouring the sodium chloride, the urea, the potassium chloride, the sodium sulfate decahydrate, the borax, the nano aluminum oxide and the silver chloride into a mixing stirrer; s2, stirring parameters configured by the mixing stirrer in the stirring process are as follows: the stirring rotating speed is 50-70r / min, the stirring time is 10-12min, and the environment temperature is controlled to be-5 DEG C to 35 DEG C, so that mixed powder is obtained; s3, the mixed powder is packaged with a bag, and packaged ice bag powder is obtained; and S4, adding the corresponding parts by weight of ice blocks into the packaged ice bag powder, standing for 2 minutes in an environment of 5-25 DEG C, and cooling the mixture to-23 DEG C to-25 DEG C to obtain the quick-cooling type low-temperature ice bag without precooling.

The invention discloses a lead-antimony alloy refining arsenic removal process and a composite additive, the composite additive is prepared from sodium hydroxide, anhydrous borax and charcoal powder, and a reaction slag phase is converted into a dry slag shell which is easy to integrally strip from a water sample slag which is difficult to separate, so that the direct recovery rate of antimony can be remarkably improved in conventional refining equipment.

The invention discloses a phase change material and an indoor refrigeration air conditioning system using the same, and belongs to an indoor air conditioning system, the phase change material comprises the following components by weight percentage: 78%-82% of modified sodium nitrate hydrate, 9%-11% of dodecanol derivative, 4%-6% of graphite powder, 0.8%-1.2% of borax, 2.5%-3.5% of trichloroethyl phosphate, and 0.8%-1.2% of 2, 6-di-tert-butyl-4-methylphenol. The phase change temperature of the composite-formula phase change material is controlled to be 10 + / -0.5 DEG C, the composite-formula phase change material is more suitable for the requirement of indoor refrigeration, the latent heat of the composite-formula phase change material reaches 200J / g, the absorption duration is remarkably prolonged, and the requirement of long-acting cooling can be met. And after the composite phase change material is applied to an air conditioning system, cold storage can be carried out through a refrigerating machine during off-peak electricity, cold energy is released by the phase change material in non-off-peak electricity time, the electric charge cost can be remarkably saved in long-term use, and the load pressure on a power grid is reduced in peak hours.