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130 results about "Lime acetate" patented technology

Preparation method of hydroxyapatite/bagasse active carbon

The invention discloses a preparation method of hydroxyapatite/bagasse active carbon. The preparation method comprises the following steps: adding 250ml of 4.4mol/L ammonium acetate buffering solution into 250ml of 0.05mol/L-0.5mol/L of calcium acetate solution, uniformly mixing, then adding 10-60g of bagasse, electrically stirring, then carrying out ultrasonic oscillation for 30-60 minutes, and standing for 24-48 hours; under rapid stirring, adding 500ml of 0.015mol/L-0.15mol/L ammonium dihydrogen phosphate solution into a mixture of calcium acetate, ammonium acetate and bagasse, adjusting the pH value to be 7.5-8.0, and stirring for 10 minutes under the room temperature; heating to be 100 DEG C by adopting water bathing, reacting for 48-60 hours, and obtaining hydroxyapatite/bagasse mixed and suspended matter solution; naturally cooling, filtering, washing, and drying for 16 hours under the temperature of 70 DEG C to obtain hydroxyapatite/bagasse mixture; carrying out carbonization under the temperature of 450-650 DEG C, then grinding, and screening by a 100-mesh sieve. The preparation method disclosed by the invention is simple in process and low in cost; and the obtained product can be widely applied to the deep-treatment procedure of waste water containing cadmium and lead in an industrial and mining enterprise.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Method and device for recovering metallic lead from lead plaster of waste lead-acid storage battery

The invention belongs to recovery treatment on lead plaster of a waste lead-acid storage battery. The method comprises the following steps of: mixing the lead plaster of the waste lead-acid storage battery with waste sulfuric acid in the waste lead-acid storage battery according to the design requirement and roasting; adding roasting sand in a stirring kettle; adding tap water to a water level line of the device and stirring the roasting sand; adding a proper amount of calcium acetate, acetic acid and nitric acid; starting a solution circulating system pump, leaching out the roasting sand and maintaining the concentration of lead acetate to be saturated; adding a proper amount of bone glue and beta-naphthol, electrolyzing immersion liquid, recovering the metallic lead at the cathode and recovering lead dioxide at the anode; press filtering residues to obtain lead-off slag and filtrate; and adding calcium carbonate in the filtrate and recycling. The device mainly comprises a leaching part, a press filtration part, a circulating part and an electrolysis part, and concretely includes eight key components of the stirring kettle, a press filter, an overflow port, an electrolysis direct current power supply, an electrolytic cell, a cathode titanium basket, a corrosion resistant pump and a heating element.
Owner:北京绿色引领环保科技研究院有限公司

High temperature dye leveler for polyester fibers

The invention discloses a high temperature dye leveler for polyester fibers, which is composed of the following raw materials in parts by weight: 1 to 2 parts of polyglycerol monostearate, 0.2 part of zinc acetate, 1 part of dodecyl trimethyl ammonium chloride, 80 parts of dye leveler, 0.1 part of magnesium acetate, 12 parts of polyamide, 0.3 part of calcium acetate, 5 parts of polyethylene glycol, 0.2 part of tin acetate, 4.5 parts of glycol, 3 parts of dimethyl terephthalate, and 1 part of carboxyl propyl methyl cellulose. The high temperature dye leveler is used for polyester fibers, enables the fabric made of the dyed polyester fibers to have a more uniform and brighter color and luster, has a very good dye leveling effect, and moreover can improve the fluffy and soft touch-feel, anti static performance, smoothness, and hydrophilicity of polyester fibers.
Owner:CHANGSHU MIAOQUAN SHENGDA AUX FACTORY

Formulation for treating and preventing acalcerosis

The invention discloses a preparation for remedying and preventing calcium deficiency and a calcium supplementation preparation. The invention is made mainly from the major raw materials of calcium acetate, glucosamine hydrochloride, casein phosphopeptide, chondroitin, and lysine hydrochloride. The mixing portions of the raw materials are 10-60 portions of calcium acetate, 1-20 portions of glucosamine hydrochloride, 1-8 portions of casein phosphopeptide, 10-60 portions of chondroitin, 1-20 portions of lysine hydrochloride, and 0.1-200 portions of supplementary materials. The calcium acetate in the invention can realize the aim of remedying and preventing the calcium deficiency in a calcium direct supplementation form. The glucosamine hydrochloride can ameliorate the metabolism and nutrition of bones, and can protect cartilage tissues. The casein phosphopeptide can promote the absorption and utilization of human body to the calcium. The chondroitin plays an important role during the bone formation process. The lysine hydrochloride can improve the absorption and accumulation of human body to the calcium, and can accelerate the growth of the bones. The preparation of the invention supplements the calcium directly, promotes the absorption of the calcium, reduces the loss of the calcium, ameliorates the metabolism and nutrition of the bones, and realizes the aim of remedying and preventing the calcium deficiency.
Owner:张永胜

Treatment method of low-concentration acetic acid wastewater containing inorganic metal ions and organic impurities

The invention discloses a treatment method of low-concentration acetic acid wastewater containing inorganic metal ions and organic impurities. The treatment method includes: subjecting the acetic acidwastewater to calcification treatment to convert acetic acid in the wastewater into calcium acetate, sulfate ions into calcium sulfate precipitate and metal ions into hydroxide precipitate; performing filtration to obtain a filter cake containing calcium sulfate and hydroxide as well as calcium acetate aqueous solution; subjecting the calcium acetate aqueous solution to MVR treatment to obtain acalcium acetate suspension, filtering the calcium acetate suspension to obtain the filtrate and the filter cake containing the calcium acetate, performing crystallization drying on the filtrate to obtain the calcium acetate, combining the calcium acetate with the filter cake containing the calcium acetate to obtain a calcium acetate solid, performing hydrolysis on the calcium acetate solid to obtain ethylic acid and calcium sulfate, and performing thermal analysis on calcium sulfate and / or the filter cake containing calcium sulfate and hydroxide; performing deep purification on the gas containing organic steam, produced by thermal analysis, the steam containing organic matter, produced by MVR treatment and the steam produced by crystallization and drying are all introduced into an oxygen cracking unit; the purification and resource treatment of the acetic acid wastewater is realized.
Owner:NANJING UNIV OF TECH +1

Method for recycling mixed acid of nitric acid, hydrofluoric acid and acetic acid

The invention provides a method for recycling mixed acid of nitric acid, hydrofluoric acid and acetic acid. The method is briefly described in the specification: 1) lime is added into mixed acid in the stainless steel industry, and iron mud and heavy metal mud such as chromium, nickel, zinc and the like are precipitated respectively by adjusting to different pH values; 2) the obtained dilute calcium nitrate solution enters an evaporation platform to obtain liquid calcium nitrate with the content of more than 50%; 3) the liquid calcium nitrate is reacted with mixed acid in the photovoltaic industry to generate calcium fluoride precipitate; 4) separation then is carried out to obtain a high-purity CaF2 product and lime is added into the filtrate to neutralize and precipitate to remove residual fluorine ions and silicate radicals; 5) industrial nitric acid then is added into the separated filtrate for converting calcium acetate in the solution into calcium nitrate and acetic acid, and then the acetic acid and water are evaporated out through an evaporation platform to obtain a calcium nitrate concentrated solution and dilute acetic acid; 6) finally, the calcium nitrate concentrated solution is cooled, crystallized and centrifugally separated to obtain a Ca(NO3)2.4H2O product with the mass fraction of more than 90%. According to the method, the limitation of an existing fluorine-containing mixed acid treatment process is solved, and the purpose of higher resource recycling value is achieved.
Owner:3R ENVIRONMENTAL TECH CO LTD +1

Cadmium-reducing agent for corns

InactiveCN108812696ADoes not affect normal production capacitySimple production processBiocidePlant growth regulatorsMalachite greenAdhesive
The invention relates to a cadmium-reducing agent for corns. The cadmium-reducing agent is prepared by crushing and mixing cadmium-reducing components, an adhesive, a pigment and an auxiliary agent, wherein the cadmium-reducing components are calcium acetate and zinc chloride, the adhesive is carboxymethyl starch, the pigment is basic malachite green, and the auxiliary agent is sepiolite. The cadmium-reducing agent provided by the invention is applicable to the leaf surface spraying of corns planted in soil polluted by cadmium, and reduces the cadmium content of corn kernels. According to theinvention, the cadmium-reducing agent is mixed with water according to the mass ratio of 1:(155-175) to prepare a suspension, leaf surface spraying is respectively carried out once in the tasseling stage, the silking stage and the early mature stage of the corns, and the cadmium content of the corn kernels is reduced by 40.3-60.8%. The cadmium-reducing agent provided by the invention does not influence normal growth of the corns, and has no adverse effect on the soil environment quality. The cadmium-reducing agent has the advantages of simple and convenient production, low cost and convenientuse, and can effectively reduce the cadmium content of corn kernels, and the economic benefit, the social benefit and the ecological benefit are significant.
Owner:HUNAN AGRICULTURAL UNIV

Photocatalyst for photocatalytic degradation of formaldehyde and preparation method thereof

The invention provides a preparation method of a photocatalyst for photocatalytic degradation of formaldehyde. According to the preparation method, an isonicotinoyl hydrazone lanthanum complex and bismuth-lanthanum co-doped nano titanium dioxide are used as main raw materials; a gel-like structure is prepared, the specific surface area is large, the light absorption area and the contact area withformaldehyde are increased; it is beneficial to light absorption and formaldehyde adsorption, the efficiency of photocatalytic degradation of formaldehyde is greatly increased, the formaldehyde degradation requirements (effective degradation can be realized no matter the concentration is high or low) in a daily environment can be met, and rapid degradation on formaldehyde in a shorter time can berealized. The preparation method of the gel structure comprises the following steps: adding the isonicotinoyl hydrazone lanthanum complex, and the bismuth-lanthanum co-doped nano titanium dioxide intodilute nitric acid, adding calcium acetate monohydrate and sodium hexametaphosphate, carrying out ultrasonic dispersion to obtain a turbid liquid, uniformly spraying the turbid liquid into a sodium silicate solution, and finally, adding ammonia water through spraying.
Owner:杭州鼎好新材料有限公司

High-temperature-resistant and refrigerant-resistant air conditioner hose

InactiveCN104455802AImprove high temperature resistanceGood resistance to refrigerantsFlexible pipesEpoxyCross-link
A high-temperature-resistant and refrigerant-resistant air conditioner hose comprises an inner rubber layer, a shielding layer, a middle rubber layer, a woven layer and an outer rubber layer from inside to outside. The inner rubber layer and the middle rubber layer are formed by chlorinated polyethylene rubber, acid-acceptors DHT-4A, antiagers RD, semi-reinforcing carbon black, lime acetate oil, plasticizers DOP, plasticizers DOA, nano-calcium carbonate, epoxy resin Epikote862, tackifiers Ricobond1756HS, cross-linking agents TAIC and cross-linking agent DCP. The tensile strength of the high-temperature-resistant and refrigerant-resistant air conditioner hose can reach 13.6 MPa, and the elongation at break of the high-temperature-resistant and refrigerant-resistant air conditioner hose can reach 302%. After the high-temperature-resistant and refrigerant-resistant air conditioner hose is aged for 168 h at 135 DEG C, the change of material hardness can reach 2.6, the change rate of the tensile strength is 3.94%, the change rate of the elongation at break is -6.35%, and therefore the high temperature resistance is good. After the high-temperature-resistant and refrigerant-resistant air conditioner hose resists 100 DEG C refrigerant and refrigerant lubricating oil for 72 h, the change of the hardness is -11, the change rate of the tensile strength is -13.7%, the change rate of the elongation at break is -17.8%, and therefore the refrigerant resistance is good.
Owner:QINGDAO SUNSONG CO LTD

Dampproof easily-absorbed magnetized slow-release fertilizer and preparation method thereof

The invention discloses a dampproof easily-absorbed magnetized slow-release fertilizer and a preparation method thereof. The dampproof easily-absorbed magnetized slow-release fertilizer is prepared from, by weight, 45-65 parts of soybean oil sediments, 35-40 parts of peat soil, 160-190 parts of sesame meal, 10-12 parts of magnesium nitrate, 26-28 parts of potassium hydrogen phosphate, 250-280 parts of Chinese medicine residues, 23-25 parts of EDTA chelate boron, 80-100 parts of flyash, 55-60 parts of iron pyrite ash, 30-35 parts of cassava starch, 5-8 parts of lime acetate, 20-24 parts of a composite bacterial strain and a proper amount of water. According to the fertilizer, raw materials contain sufficient nitrogen, phosphorus and potassium which are greatly needed by plants, meanwhile the EDTA chelate boron and chelating liquid of a coated layer are utilized, it is beneficial for the plants to absorb various microelements, fermented granulation of the soybean oil sediments, the peat soil and the like serve as organic matter and an anti-blushing agent, dryness and stabilization of fertilizer particles can be guaranteed to the maximum degree, the service life of the fertilizer is prolonged, and effectiveness of fertilizer nutrients is maintained.
Owner:ANHUI HUACHUANG MODERN AGRI TECH
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