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Preparation process of fireproof and wear-resistant calcined basic zinc carbonate

A preparation process, zinc carbonate technology, applied in the direction of zinc compounds, inorganic chemistry, nanotechnology, etc., can solve the problems of specific surface area of ​​basic zinc carbonate, suspension of reaction solution, single function, etc., and achieve good stoichiometry The effect of high stability, narrow particle size distribution and high product purity

Pending Publication Date: 2021-03-19
太仓恒泽科技有限公司
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  • Abstract
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Problems solved by technology

[0005] Chinese patent application No. CN201410420362.6 discloses a method for preparing nano-basic zinc carbonate. The hydrogen sulfate-ammonium bicarbonate method is used to prepare nano-basic zinc carbonate. The degree reaches the optimum value, and the problems of large specific surface area, suspension of reaction solution, difficulty in filtration and single function in the preparation of basic zinc carbonate are not solved

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  • Preparation process of fireproof and wear-resistant calcined basic zinc carbonate

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Embodiment 1

[0032] The preparation process of the fireproof and wear-resistant calcined basic zinc carbonate comprises the following steps:

[0033](1) Preparation of zinc sulfate solution: put zinc oxide ore in the leaching device, pour sulfuric acid with a concentration of 20% into the leaching device, then use an electric stirring device to stir for 1.5 hours, then acid leaching for 4.0 hours h, after the leaching is finished, filter and purify the leaching solution in the leaching device to obtain a zinc sulfate solution; the liquid-solid ratio of the zinc oxide ore to sulfuric acid is 5:1, and the stirring speed of the electric stirring device is 220r / min;

[0034] (2) Preparation of reaction solution: heat the zinc sulfate solution to 80° C., add potassium permanganate for oxidation, mechanically stir for 1.5 hours, adjust the pH to 5.2 to 5.4 with ammonia water; keep the temperature for 1 hour, cool to room temperature, filter, The zinc sulfate solution for preliminary iron removal...

Embodiment 2

[0037] The preparation process of the fireproof and wear-resistant calcined basic zinc carbonate comprises the following steps:

[0038] (1) Preparation of zinc sulfate solution: put the zinc oxide ore into the leaching device, pour sulfuric acid with a concentration of 21% into the leaching device, then use an electric stirring device to stir, the stirring time is 1.8h, and then acid leaching 4.0 -5.0h, after the leaching is finished, filter and purify the leaching solution in the leaching device to obtain a zinc sulfate solution; the liquid-solid ratio of the zinc oxide ore to sulfuric acid is 5:1, and the stirring speed of the electric stirring device is 250r / min;

[0039] (2) Preparation of reaction solution: heat the zinc sulfate solution to 80-90° C., add potassium permanganate for oxidation, mechanically stir for 1.5 hours, adjust the pH to 5.2-5.4 with ammonia water; keep the temperature for 2 hours, cool to room temperature, Filtrate to obtain the zinc sulfate solut...

Embodiment 3

[0042] The preparation process of the fireproof and wear-resistant calcined basic zinc carbonate comprises the following steps:

[0043] (1) Preparation of zinc sulfate solution: put zinc oxide ore in the leaching device, pour sulfuric acid with a concentration of 20-23% into the leaching device, and then use an electric stirring device to stir for 2.0 hours, then acid After leaching for 4.0h, after the leaching is over, filter and purify the leaching solution in the leaching device to obtain a zinc sulfate solution; the liquid-solid ratio of the zinc oxide ore to sulfuric acid is 5:1, and the stirring speed of the electric stirring device is 250r / min;

[0044] (2) Preparation of reaction solution: heat the zinc sulfate solution to 80-90° C., add potassium permanganate for oxidation, mechanically stir for 1.5 h, adjust the pH to 5.2-5.4 with ammonia water; keep the temperature for 1, cool to room temperature, Filtrate to obtain the zinc sulfate solution for preliminary iron ...

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Abstract

The invention provides a preparation process of fireproof and wear-resistant calcined basic zinc carbonate, and the method comprises the following steps of: (1) preparation of a zinc sulfate solution:leaching and filtering zinc oxide ore to obtain the zinc sulfate solution; (2) preparation of a reaction solution: carrying out purification treatment of iron removal, copper removal and cadmium removal on the zinc sulfate solution to obtain a high-purity zinc sulfate solution; diluting the high-purity zinc sulfate solution to 0.8-1.0mol / L; dropwise adding a sodium carbonate solution in a constant-pressure dropping funnel into the solution until the pH value reaches 6.5-7.0, then raising the temperature to 60-70DEG C, carrying out ultrasonic radiation for 30-50min, and then performing ageingfor 1-1.5h to obtain a reaction solution; adding a fire retardant and a wear-resistant agent into the reaction solution; and (3) preparation of basic zinc carbonate. The preparation process of the fireproof and wear-resistant calcined basic zinc carbonate is simple and efficient, reasonable in formula design, high in production efficiency and low in comprehensive cost, the problems that a basic zinc carbonate product is single and low in additional value are solved, and the fireproof and wear-resistant calcined basic zinc carbonate is good in fire resistance and wear resistance and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of basic zinc carbonate preparation, and in particular relates to a preparation process of fireproof and wear-resistant calcined basic zinc carbonate. Background technique [0002] Basic zinc carbonate is widely used in medicine, rubber, latex products, petrochemical industry, desulfurizer and catalyst of certain raw materials, and is also the precursor of zinc carbonate prepared by thermal decomposition. Zinc oxide has excellent photoelectric properties and is widely used in photocatalysis, semiconductors, and pressure-sensitive ceramics, coatings, rubber, plastics, and antibacterial materials. At present, a process method for producing nano-zinc oxide is to calcine the basic zinc carbonate precursor. The structure of zinc carbonate has a greater influence and is an important condition for the preparation of zinc carbonate with different forms and functions. [0003] Wherein, the chemical formula of basic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/00B82Y40/00
CPCC01G9/00B82Y40/00C01P2004/64
Inventor 季人杰苏燕季闻华
Owner 太仓恒泽科技有限公司
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