Production method of basic cobalt carbonate

Abstract

The invention discloses a production method of basic cobalt carbonate. The method realizes efficient pollution-free production of basic cobalt carbonate. The production method comprises the following steps of: a, preparing a Na2CO3 solution; b, synthesizing; c, ageing; d, performing primary filter pressing and washing; e, performing secondary filter pressing and washing; and f, drying. The method is simple in technical process and can be used for quickly producing basic cobalt carbonate; meanwhile, the product quality can be adjusted well by controlling the stirring speed, the reaction temperature and the adding speed of cobalt chloride, an effect of uniform particles is achieved, and the content of cobalt can reach 52%; meanwhile, an additive, namely sodium ascorbate, is added into washing water during reaction to prevent oxidization of the product and is easy for filter pressing; and moreover, the content of impurities in the product is reduced by washing the product with deionized water for many times, and post-washing water can be recycled if being treated. Therefore, the whole production flow is simple in operation and low in cost, the production efficiency is increased while the labor intensity is lowered, and moreover, the method is free of environmental pollution and can be used for large-area popularization.

Description

technical field [0001] The invention relates to the field of chemical product preparation, in particular to a production method of basic cobalt carbonate. Background technique [0002] Cobalt subcarbonate [2CoCO 3 3Co(OH) 2 ·H 2 O] is a purple-red prismatic powder, soluble in dilute acid and liquid ammonia, almost insoluble in cold water, decomposed in hot water, and its water solubility has a lot to do with the source of its shape. It is used as raw material for catalysts and cobalt salts, colorants for ceramic industry, and additives for electronic and magnetic materials. [0003] Basic cobalt carbonate is easy to decompose when heated, and the products of its decomposition are tricobalt tetroxide, carbon dioxide and water. Because it is easy to decompose, the product has less impurities, and it will not cause the problem of nitrogen oxides caused by the decomposition of cobalt nitrate, so it is very suitable for the processing and manufacturing of various cobalt mater...

AI Technical Summary

Problems solved by technology

This process is easy to operate and the production cycle is short; however, the performance of the produced product is unstable, easy to oxidize, and the product particles are uneven, and the cobalt metal content can only reach 46%-50%, so it is not conducive to efficient fine production, easy generate great waste

Now, a nano-synthesis method has been developed to produce basic cobalt carbonate materials. Although this technology is relatively advanced and guarantees product quality, the production cost is very high, the equipment and instruments are required to be precise, and the cost is huge. Therefore, Currently, there is no condition for large-scale promotion