Method for recovering tin metal from tin-containing waste bricks

A technology of tin metal and waste brick slag, applied in the field of non-ferrous metal smelting, can solve the problems of air, water and soil pollution, waste of tin resources, etc., achieve simple and environmentally friendly procedures, low energy consumption, and solve the effects of environmental pollution and resource waste

Inactive Publication Date: 2014-12-10
LAIBIN CHINA TIN SMELTING
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Problems solved by technology

During the overhaul of the above-mentioned furnace, refractory bricks need to be replaced. In the past, these replaced waste bricks were directly discarded. The tin-containing waste bricks exposed to the environment will not only cause air, water and soil pollution, but also be tin resources. waste of

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  • Method for recovering tin metal from tin-containing waste bricks

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Embodiment 1

[0019] The method for reclaiming tin metal from tin-containing waste bricks of the present invention, comprises the steps:

[0020] 1. Mineral raw material composition and content

[0021] In tin metal smelters, tin waste bricks contain 15% tin, and the rest are impurities such as alumina and quartz.

[0022] 2. The operation process includes the following steps:

[0023] (1) Put the refractory bricks of the reverberatory furnace, electric furnace or Ausmelt furnace in the tin metal smelting plant into the crusher for crushing to obtain fragments with a particle size of 6 mm to 15 mm;

[0024] (2) hoist the fragments into a ball mill with a gourd crane for fine grinding to obtain coarse sand with a particle size less than 2mm;

[0025] (3) Put the coarse sand into the pulping tank, inject water into the slurrying tank according to the weight ratio coarse sand: water = 1:3-4, and stir for 0.5-1 hour to obtain the pulp;

[0026] (4) The slurried pulp is pumped to the shaking ...

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Abstract

The invention discloses a method for recovering tin metal from tin-containing waste bricks. The method comprises the following steps: crushing the tin-containing waste bricks in a crusher, thus obtaining crushed blocks with particle size being 6-15mm; finely milling the crushed blocks in a ball mill, thus obtaining fine sand with particle size being less than 2mm; feeding coarse sand to a pulpifying tank, injecting water into the pulpifying tank according to the weight ratio of the coarse sand to water being 1 to (3-4), stirring for 0.5-1 hour, so as to obtain ore pulp; pumping the ore pulp to a table concentrator through an ore pulp pump, and separating out solder spatter and waste brick residue through the table concentrator, wherein the solder spatter returns to a coarse smelting process of tin ore and the waste brick residue is cast off. The method has the advantages of simple procedure, easy control over process and high recovery rate, the problems of environmental pollution and resource waste caused when the tin-containing waste bricks are treated by a conventional method are solved, and the utilization rate of resources is increased.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal smelting, in particular to a method for recovering tin metal from tin-containing waste bricks. Background technique [0002] After the tin concentrate is boiled and roasted to remove most of the sulfur and arsenic, tin calcine is produced, and the tin calcine is mixed with an appropriate proportion of reduced coal, and the reduction smelting is carried out in a reverberatory furnace, an electric furnace or an Ausmelt furnace to produce Out of crude tin. During the reduction smelting process, a small amount of tin metal will infiltrate the refractory bricks of reverberatory, electric or Ausmelt furnaces. During the overhaul of the above-mentioned furnace, refractory bricks need to be replaced. In the past, these replaced waste bricks were directly discarded. The tin-containing waste bricks exposed to the environment will not only cause air, water and soil pollution, but also be tin resour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B25/06C22B25/02
CPCY02P10/20
Inventor 覃宝桂陶政修黎涌泉
Owner LAIBIN CHINA TIN SMELTING
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