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43 results about "Zinc preparations" patented technology

Utilizing method of zinc-containing dust ash of steel plant

The invention relates to a utilizing method for producing zinc oxide products by utilizing zinc-containing dust ash of a steel plant and recycling ferric carbon for returning to smelting. Zinc in the dust ash is leached by use of an ammonia method; materials which have the zinc content greater than 15% and contain non-vulcanized zinc are added for increasing the concentration of a zinc solution; leachate is purified, cleaned and subjected to ammonia distilling, and zinc oxide is prepared after electrolytic zinc preparation or zinc deposition; and original dust ash tailings or screened dust ash tailings are sent into a blast furnace for smelting, or a conventional pyrogenic process is adopted for recycling ferric carbon from the original dust ash tailings or the screened dust ash tailings, and collected secondary zinc oxide dust ash is used for the front end leaching, so that the zinc concentration of the leachate is increased. The utilizing method can be applicable to dust ash, with the zinc content as lower as 4% or even lower, of the steel plant; by use of a conventional method, the zinc extraction rate and the removing rate of harmful substances including alkali metal, fluorine and chlorine are both above 90%; the dust ash tailing recovery process is high in equipment adaptability, and appropriate treatment processes can be chosen according to existing equipment; and efficiency is high, the environment is protected, and comprehensive cyclic utilization of the zinc-containing dust ash is achieved.
Owner:李果

Process for preparing zinc sulfate

The invention provides a process for preparing zinc sulfate and the process is simple in step, low in energy consumption, high in production efficiency and high in product purity. The process comprises the following steps: putting secondary zinc oxide and zinc oxide in waste residues produced in zinc preparation in a raw material tank filled with dilute sulfuric acid, reacting to generate a zinc sulfate solution, guiding the zinc sulfate solution into a reaction tank, removing impurities such as iron, cobalt and copper in the reaction tank, filtering the impurities through a filtering machine, guiding the zinc sulfate solution into a storage tank for precipitation, evaporating the zinc sulfate solution in an evaporator to obtain a concentrated solution, crystallizing in a crystallizing tank, carrying out crystal separation in a centrifugal machine, cooling to obtain zinc sulfate containing crystal water and drying in a dryer to obtain the zinc sulfate. According to the process, the zinc sulfate solution is concentrated in the way of pouring hot oil and circularly heating, so that the heating temperature is higher, the heating material can be recycled, the energy consumption is little and the cost is reduced. The process for preparing the zinc sulfate is simple and clear in processing step, energy-saving, friendly to the environment and convenient to operate.
Owner:TIANJIN XINXIN CHEM FACTORY

Method for preparing high-purity zinc by electrolysis

The invention provides a method for preparing high-purity zinc by electrolysis. The method comprises the following steps: leaching a zinc-containing material using an ammonium chloride solution to obtain a zinc-ammonia complex solution; performing impurity removal on the zinc-ammonia complex solution through constant-voltage electrolysis to remove most of impurity ions which are more electropositive than zinc from the solution; after impurity removal through constant-voltage electrolysis, allowing the zinc-ammonia complex solution to flow through a zinc particle vibration purifier to replace the residual impurity metal ions in the solution and thus to achieve the effect of deep purification of the solution; adding carbon-ammonium into the zinc-ammonia complex solution after deep purification to perform ammonia treatment and remove a part of calcium and magnesium ions from the solution; and performing electrolysis on the ammonia-treated solution to obtain high-purity metal zinc. Compared with the prior art of zinc preparation through electrolysis of a zinc-ammonia complex compound, the method provided by the invention adopts carbon-ammonium to replace liquid ammonia, so as to reduce the consumption cost of ammonia and avoid the enrichment of calcium and magnesium in the solution; and performs deep purification by impurity removal through constant-voltage electrolysis and treatment of the solution with the zinc particle vibration purifier after electrolysis impurity removal, so as to completely eliminate the use of zinc powder in the purification link, greatly reduce the purification cost and produce the purified solution which is higher in quality than purification with zinc powder. Therefore, the method stably produces No.0 metal zinc.
Owner:唐山瑞能再生资源有限公司

Sprouted brown rice flour capable of reducing weight and making method of sprouted brown rice flour

The invention discloses sprouted brown rice flour capable of reducing weight. The sprouted brown rice flour comprises main coarse food grain raw materials of sprouted brown rice, lotus seeds, red beans, soybeans, black beans, corn, oat and buckwheat, so that the content of starch in the sprouted brown rice flour can be increased, and digestive absorption is facilitated. Through combination of traditional Chinese medicine raw materials of haws, lotus seeds, lily bulbs, Chinese yams, poria cocos, honey, honeysuckle flowers, fresh ginger, lotus leaves, radix rehmanniae, immature orange fruits, prepared radix et rhizoma rhei, semen cassiae, rhizoma alismatis, rhizoma polygonati, coix seeds, fructus momordicae, semen pruni, linseeds and heartleaf houttuynia herbs, and the traditional Chinese medicine raw materials are mixed with the power prepared from the sprouted brown rice, the lotus seeds, the red beans, the soybeans, the black beans, the corn, the oat and the buckwheat, so that the effects of cooperation, mutual promotion and effective improvement of digestive ability can be achieved; and finally, through auxiliary materials of L-carnitine, beta-carotene, lycopene, a calcium preparation, chalybeate and a zinc preparation, the sprouted brown rice flour can supplement rich calcium elements, ferrum elements and zinc elements for eaters, promotes the element content in human bodiesto be balanced, and has the function of adjusting the health statuses of human bodies, including reducing blood sugar, reducing weight, easing constipation, improving sleep and the like.
Owner:浙江益万生物技术有限公司

Highly-corrosion-resistant stirrer and making method thereof

The invention discloses a highly-corrosion-resistant stirrer and a making method. The highly-corrosion-resistant stirrer comprises a stirring shaft, a hub, blade fixing plates and blades, wherein one end of the stirring shaft is connected with a power device, and the other end of the stirring shaft is welded with the hub; one end of the blade fixing plate is welded with the hub, and the other end of the blade fixing plate is connected with the blade by fasteners; the blade fixing plates are flat plates and form angles of 30-50 degrees with the axis of the stirring shaft; and the surface hardness of the blades is 20-24HRC, the inclination angles and the widths of the blades change along with the length directions of the blades. The preparation method comprises the following steps: carrying out primary smelting in a medium-frequency induction furnace, carrying out refined smelting in an argon-oxygen decarburization furnace, adopting an electroslag remelting process to smelt a super duplex stainless-steel ingot, forging the super duplex stainless-steel ingot to be molded, and after solids are dissolved, assembling and molding. The highly-corrosion-resistant stirrer and the preparation method disclosed by the invention have the advantages that the production cost is reduced, and the service life of equipments prolonged and the use safety of equipment in the zinc preparation industry is improved.
Owner:LUOYANG SUNRUI SPECIAL EQUIP

Leaching solution and leaching process of zinc

InactiveCN108842072AComplete leaching separationEfficient leaching and separationProcess efficiency improvementYttrium chlorideMaterials science
The invention relates to a leaching solution and a leaching process of zinc, and belongs to the technical field of zinc preparation methods. The leaching solution is characterized by comprising waterand the following raw materials by weight: 31.2-38.6 parts of ferric chloride, 49.8-58.7 parts of sodium chloride, 4.3-6.2 parts of yttrium chloride and 4.2-6.7 parts of hydrochloric acid. The leaching process comprises the following steps that zinc concentrate is crushed, then zinc leaching solution is added, and the solid-liquid ratio g : L of the zinc concentrate to the zinc leaching solution is 1~3 : 4~7; electrochemical reduction is carried out under the stirring condition, and meanwhile electrochemical reduction is carried out, the leaching temperature is 40 DEG C-50 DEG C, and the leaching time is 2.5 h-3 h; zinc powder accounting for 0.01% -1% of the mass of the zinc concentrate is added and filtered to obtain filtrate X1 and filter residue Y1; and the filtrate X1 is evaporated andcrystallized to obtain zinc chloride, and the evaporated steam is condensed and then returned to a zinc leaching solution for reuse. According to the leaching solution and the leaching process, the zinc in the ore can be fully leached. The used leaching solution can be recycled after the required zinc is separated.
Owner:淄博淦达环保科技有限公司

A kind of method for electrolytic preparation of high-purity zinc

The invention provides a method for preparing high-purity zinc by electrolysis. The method comprises the following steps: leaching a zinc-containing material using an ammonium chloride solution to obtain a zinc-ammonia complex solution; performing impurity removal on the zinc-ammonia complex solution through constant-voltage electrolysis to remove most of impurity ions which are more electropositive than zinc from the solution; after impurity removal through constant-voltage electrolysis, allowing the zinc-ammonia complex solution to flow through a zinc particle vibration purifier to replace the residual impurity metal ions in the solution and thus to achieve the effect of deep purification of the solution; adding carbon-ammonium into the zinc-ammonia complex solution after deep purification to perform ammonia treatment and remove a part of calcium and magnesium ions from the solution; and performing electrolysis on the ammonia-treated solution to obtain high-purity metal zinc. Compared with the prior art of zinc preparation through electrolysis of a zinc-ammonia complex compound, the method provided by the invention adopts carbon-ammonium to replace liquid ammonia, so as to reduce the consumption cost of ammonia and avoid the enrichment of calcium and magnesium in the solution; and performs deep purification by impurity removal through constant-voltage electrolysis and treatment of the solution with the zinc particle vibration purifier after electrolysis impurity removal, so as to completely eliminate the use of zinc powder in the purification link, greatly reduce the purification cost and produce the purified solution which is higher in quality than purification with zinc powder. Therefore, the method stably produces No.0 metal zinc.
Owner:唐山瑞能再生资源有限公司
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