218 results about "Calcium Chloride Dihydrate" patented technology

The invention relates to a compound chloride-based environment-friendly snowmelt agent, which comprises a main component of a chloride mixture of calcium chloride dihydrate and magnesium chloride hexahydrate, contains various additives of sodium citrate, disodium hydrogen phosphate, sodium metasilicate, urea and the like and can contain abscisic acid or indoleacetic acid or a mixture thereof, sodium tartrate, humic acid or a salt thereof. The snowmelt agent in the invention can reduce the corrosivity to a metal object and a concrete structure effectively, improves the anti-salinization capabilities of a seed, a plant and soil, can be used when the temperature is as low as -25 DEG C, and solves the problems of bad snow melting effect caused by an autologous freezing point characteristic when a sodium chloride-based snowmelt agent is used and high cost caused by using an anhydrous calcium chloride-based snowmelt agent under the condition. The invention also provides a use method of the snowmelt agent, which places the main component and each additive separately without preparing a finished product of the snowmelt agent in advance and compounds the snowmelt agent on the spot before using. The method can avoid the problems of wetting, hardening and the like of the finished product of the snowmelt agent in the processes of storing and transporting, can avoid the defects of high-temperature energy consumption in the process of preparing compound granules (such as coating and granulating) and the capability of causing decomposition of the additives, has simple operations and a low cost, and is particularly suitable for on-site mechanical shed work.

The invention provides a production technology of recovering a glycine acid-binding agent triethylamine employing a triethylamine method. An industrial calcium chloride product can be coproduced. The production technology comprises the following steps: washing a triethylamine hydrochloride crystalline solid by using an aqueous solution to remove impurities; dissolving the washed triethylamine hydrochloride crystal into water; adding calcium hydroxide or calcium oxide, adjusting the PH value to 10-12, so as to obtain a calcium chloride layered solution with a triethylamine layer; separating out a crude product triethylamine, and dewatering and standing to obtain qualified triethylamine; pumping a calcium chloride solution into an evaporation device for evaporation concentration, and recycling condensate containing triethylamine to dissolve washed triethylamine hydrochloride; adjusting the PH value of the residual calcium chloride solution to 7.5-9 with hydrochloric acid, and then feeding to an evaporator to evaporate; cooling and crystallizing, filtering and drying at about 200 DEG C, so as to obtain a calcium chloride dihydrate product; adding concentrated sulfuric acid and urea to a washing solution to process, so as to respectively obtain calcium sulfate, hydrochloric acid and a chemical fertilizer material product.

The invention belongs to the technical field of treatment and utilization of chemical 'three wastes', in particular to a method for co-production of raw gypsum in the preparation of Yengsu calcium chloride dihydrate by phosphogypsum. In the main technical scheme, phosphogypsum is purified and synthesized to obtain mixed solution of calcium chloride and calcium sulfate, a crystal calcium chloride dihydrate product can be obtained through distillation, washing, crushing and packaging of calcium chloride, and a white raw gypsum product can be obtained through washing, dehydrating, drying, crushing and packaging of the filter cake. The invention has the advantages of low production cost, high profit, large market demand and simple process and production equipment, and is a practical method for treatment and utilization. Moreover, the invention not only needs low investment, but also can create considerable economic value, eliminate the chemical waste residues, and protect the environment.

The invention relates highly effective fireproof dust suppression material and method. The material comprises 60% calcium chloride dehydrate, 20% magnesium chloride hexahydrate, 20% water and surface active agent. The surface active agent comprises wetting agent, dispersing agent and inhibitor. The calcium chloride-dehydrate and magnesium chloride hexahydrate have hydroscopicity and fire-retardancy, and the surface active agent has the advantages of reducing surface tension, humectation and thickening action. The invention has the advantage of reducing corrosion. It can be used in anti-dust, fireproof fields.

The invention discloses a material circulating system formed by waste acetylene sludge and the chlor-alkali industry. The system comprises: pretreated waste acetylene sludge is reacted with hydrochloric acid, the reaction product is filtered to obtain a calcium chloride solution; the filtrate is reacted with sodium hydroxide generated by electrolysis of a chlor-alkali factory to generate high-purity calvital; the calvital is chloridized, centrifugated, dried and crushed to prepare bleaching powder; and filter cakes are reacted with the hydrochloric acid to generate active carbon. The calcium chloride generated in the reaction can be prepared into calcium chloride dihydrate and anhydrous calcium chloride; and sodium chloride after treatment can be taken as a raw material for electrolysis. The material circulating system effectively solves the problem of treating the waste acetylene sludge and raw material problem in the chlor-alkali industry, embodies recycling economy; and byproducts of the bleaching powder and the active carbon and calcium chloride dihydrate products improve deep processing capacity of an enterprise.

The invention relates to plant propagation, and in particular relates to a year-round strawberry hybridizing and breeding method which comprises the following step of: taking fragaria orientalis and rupee strawberry test tube seedlings as test materials. A regulating and controlling method for male sterile line of the rupee strawberry is as follows: selecting a plurality of runner tips of the rupee strawberry test tube seedling, controlling the temperature at 10-13 DEG C, controlling illuminating hour as 4-5h.d<-1>, and processing for 16-25 days, to promote the rupee strawberry to generate the male sterile line; and a method for preparing fragaria orientalis pollen mother liquid comprises the following steps of: setting volume of distilled water mixing liquid of 5.2g of fragaria orientalis pollen and boric acid, 150g of sucrose, 12.5mg of calcium chloride dihydrate and 36g of polyethylene glycol 4000 to 1L, and using the distilled water mixing liquid as mother liquid for further, wherein the pollen accounts for 8-12g; diluting mother liquid by distilled water; and keeping for 6 hours at 18-22 DEG C, uniformly shaking, spraying on the rupee strawberry male sterile line, and collecting seeds and planting after the rupee strawberry fruits are mature.

The invention discloses a method for comprehensive reclaiming elements by treating laterite-nickel ore by combination of chemical waste sulfuric acid and waste hydrochloric acid. The method comprises the following steps: stirring and extracting the prepared laterite-nickel ore with granularity of less than 0.15mm in a solid-liquid ratio that waste hydrochloric acid to minerals is (3-5):1; neutralizing extract with calcium carbonate or lime to remove iron, and precipitating nickel with lime; precipitating magnesium by adding lime after nickel is precipitated to obtain magnesium hydroxide, evaporating and crystallizing the liquid after magnesium is precipitated to produce calcium chloride dehydrate; soaking the prepared laterite-nickel ore of 2-10mm in a liquid-solid ratio of 0.5:1 for multiple times in a countercurrent manner, and neutralizing the extract with magnesium hydroxide to remove iron, and precipitating magnesium with sodium hydroxide; evaporating and crystallizing the solution after nickel is precipitated to produce magnesium sulfate heptahydrate. The process is adjustable in production scale, wide in resource utilization, simple in process flow, small in investment and low in energy consumption, can be used for comprehensively reclaiming elements, does not pollute the environment, has the advantages of high nickel reclaiming rate, simple operation and low production cost, and provides an extremely effective and economical way to effective utilization of waste sulfuric acid and waste hydrochloric acid and comprehensive reclaiming of laterite-nickel ore.