Leaching treatment technique for cobalt-containing rare alloy

Abstract

The invention discloses a leaching treatment process of cobalt rare alloy, belonging to the technical field of wet-firing methods combined smelting of non-ferrous metal. After being melted, the cobalt rare alloy is impacted by high-pressure water, then atomized and cooled down, turning into the shape of flour, and is leached out by employing inorganic acid. Compared with the milling and leaching process of the existing rare alloy, the invention simplifies the technical process, changes flour milling of two-stage mechanical crushing into flour-manufacture of melting and spraying, and three-stage countercurrent or multi-mersion into the leaching of two-stage countercurrent. Compared with devices with same investment, the production efficiency is largely increased, the flour milling amount with the use of flour milling process of melting and spraying is increased by more than two times, and the leaching time is shortened by one third. The leaching ratio of cobalt and copper is more than 99% and is increased by more than three percentage points. The leaching ratio of iron is less than 60% and is decreased by one third, thereby reducing one third of the subsequent de-ironing costs.

Description

technical field [0001] The invention relates to a leaching treatment process for cobalt-containing rare alloys, and belongs to the technical field of combined pyro-wet smelting of nonferrous metals. Background technique [0002] The rare alloy mentioned in the present invention is an alloy mainly containing cobalt, copper, iron and silicon elements. The content range of various elements in this alloy is roughly (%): Co5-60; Cu10-60; Fe20-60; Si5-15, which is made of an oxide ore in Africa. Formed into irregular particles with a particle size of 1-30 mm. According to the phase analysis of the composition (%): Co34.39; Cu13.08; Fe28.50; Si7.54, there are three basic phases of this alloy: unalloyed metal copper, alloyed alloy There are two more alloys in the phase. [0003] The X-ray diffraction spectrum of the alloy is shown in figure 1 . Depend on figure 1 It can be seen that the diffraction lines are few and simple, and the strongest diffraction line at 1.9876 Å is an ...

AI Technical Summary

Problems solved by technology

Although this process is simple, it has the following disadvantages in production practice: (1) the production efficiency is low, the production cycle is long, and it often takes more than ten days to complete a leaching process; (2) the acidity of the soaking solution is too high, which increases the extraction of the subsequent process Difficulty and production cost; (3) The leaching rate of cobalt and copper is not high, the leaching rate of a leaching process is less than 90%, and the leaching residue needs to be reprocessed and recovered

(4) Raw materials in the leaching process occupy a large amount of production funds, because raw materials account for 75% of the total production cost

But there are also two disadvantages: one is the low efficiency of the mechanical grinding process

Second, the leaching process is still relatively long

Increased process

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