A kind of preparation technology of ternary copper powder catalyst

Abstract

The invention discloses a preparation process of a ternary copper powder catalyst, comprising the following steps: placing the copper concentrate in a tube furnace for roasting; mixing the prepared calcined sand with concentrated sulfuric acid evenly, and slowly adding Iron powder, filter and dry after the replacement reaction to obtain copper powder; mix copper oxide powder and copper powder and place them in a synthetic filter device, filter to remove iron filings, and then feed nitrogen into the filter tank; put the filtered mixed powder in High temperature roasting in heating device. The present invention carries out magnetic filtration treatment after copper powder replacement, removes iron powder, and adopts a mechanical automatic device for impurity removal. Manually only needs to preset the number of laterally displaced and longitudinally rotated gear turns, and the synthetic filter device can automatically realize the input of mixed powder. In the corresponding filter tank, at the same time, nitrogen gas is put into the tank during the filtration process. After the filtration, the whole filter tank can be put into the heating device to catalyze the reaction. The reaction method reduces the corresponding manual operation and is intelligent and convenient.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation process of a ternary copper powder catalyst. Background technique [0002] Classic copper-based composites are the most effective catalysts for the direct synthesis of organochlorosilanes. The industrial preparation of high-purity, high-fineness copper catalysts can be carried out by mechanical crushing, atomization, electrolysis, reduction and other methods. In recent years, the organosilicon industry has widely used mechanical ball milling to prepare Cu, Cu-containing 2 Copper-based catalysts of O and CuO. The raw copper powder used in it needs to be roasted-acid leached-replaced to obtain copper powder, the copper concentrate is roasted, the obtained calcine is acid-leached with dilute sulfuric acid, and iron powder is used to replace the leaching solution to obtain copper. The prepared ternary The copper powder catalyst is inevitably mixed with ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the prepared ternary copper powder catalyst is inevitably mixed with a small amount of iron derivatives, which affects the purity of the catalyst, and in the existing catalyst production process, the raw material loading steps are relatively cumbersome, and there is a lack of necessary components in the high temperature reaction. Reaction control means, most of the entire process needs to be completed manually, hindering the improvement of efficiency and other technical problems, providing a preparation process for ternary copper powder catalyst

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