Process for preparing basic zinc chloride of trace mineral supplement

Abstract

The invention discloses a method for preparing alkali zinc chloride, a trace element additive, which is prepared from zinc oxide and zinc chloride by the mol ratio of 4:1 at 75-95 deg. C, controlling pH=6-8, reacting 1.5-3 hours under normal pressure condition, then carrying out centrifugal separation, washing, drying, disintegrating, and packaging.

Description

Technical field:

[0001] The invention relates to a preparation method of basic zinc chloride as a trace element additive. Background technique:

[0002] The application of zinc in today's farming is indispensable, but zinc sulfate or zinc oxide is generally used as zinc element additives. The problems of these two zinc elements are slow absorption and low absorption rate, so the dosage is also large. And chelated zinc (zinc methionine, etc.) is difficult to popularize because of the high price though good. The application of basic zinc chloride as feed plays an active role in solving the requirements of fast zinc absorption and high absorption rate in farmed animals, reducing environmental pollution caused by high zinc content in excrement, and keeping the price from being too high. In the past, the production of basic zinc chloride was produced with waste zinc, and also with zinc in the etching solution of the electroplating plate or circuit plate. The disadvantage of thes...