Preparing method of high-purity basic cupric carbonate

A technology of copper carbonate and soda ash, applied in chemical instruments and methods, copper compounds, inorganic chemistry, etc., can solve the problems of large amount of waste water, large energy consumption, heavy pollution, etc., and achieve the effect of low cost and high utilization rate of raw materials

Inactive Publication Date: 2014-08-20
JIANGSU TEHO METAL IND
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Problems solved by technology

Because this process is synthesized in a solution state, the volume of the solution is large, because the synthesis needs to be heated to a higher temperature, so the energy consumption is large, the amount of waste water produced is large, and the concentration of sodium chloride in the aqueous solution is produced during the synthesis. Higher, so it is not easy to clean and separate the sodium chloride in the product, and the amount of washing water used is also large, the fineness of the product cannot be controlled, and the purity of the product cannot meet the market demand, so the process cost is high, and the amount of waste water is large. Heavy pollution, low output, high energy consumption, difficult to control product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment one: a kind of preparation method of high-purity basic formula copper carbonate comprises the steps:

[0033] (1) Prepare ammonia water: pass liquid ammonia into deionized water and liquid ammonia under a pressure of 0.2 MPa to prepare ammonia water with a concentration of 10% to 12%, and store it in the liquid storage tank for later use;

[0034] (2) Synthesis reaction of leaching: use a shearing machine to cut the electrolytic copper sheet with a purity ≥99.9% into strips of electrolytic copper and put it into the copper bath, filter the ammonia water prepared in step (1) through a bag filter and then pump it Put into the copper tank until the electrolytic copper is submerged, then add ammonium bicarbonate into the copper tank according to the molar ratio of ammonium bicarbonate / ammonia water ≥ 2, and use an air compressor to blow air from the bottom of the copper tank to make the air pressure in the copper tank 1.01 ×10 5 ~10 6 Pa, the reaction temperatu...

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Abstract

The invention discloses a preparing method of high-purity basic cupric carbonate. Electrolytic copper, aqueous ammonia and ammonium bicarbonate are adopted as raw materials. The high-purity basic cupric carbonate is obtained by steps of preparing the aqueous ammonia, leaching and synthesizing, filtering, performing thermolysis, centrifuging to remove water, rinsing, drying, smashing, packaging after the assay is approved, and the like, and by adoption of secondary oxidation. The preparing method has characteristics of no production of side products, no production of waste materials, high utilization rate of the raw materials, low cost and no pollution.

Description

[0001] technical field [0002] The invention relates to the technical field of chemistry and chemical engineering, in particular to a method for preparing high-purity basic copper carbonate. [0003] Background technique [0004] Basic copper carbonate belongs to the field of fine chemical industry, and is mainly used in organic catalysts, fungicides, electronic ceramics, dealkalization agents for crude oil storage, etc. The synthetic method of traditional basic copper carbonate mainly is to synthesize basic copper carbonate with sodium carbonate or sodium bicarbonate solution in dissolved state with copper sulfate, cupric chloride or copper nitrate. Because this process is synthesized in a solution state, the volume of the solution is large, because the synthesis needs to be heated to a higher temperature, so the energy consumption is large, the amount of waste water produced is large, and the concentration of sodium chloride in the aqueous solution is produced during the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/00
Inventor 陆寅陆明森张小琴
Owner JIANGSU TEHO METAL IND
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