Method for preparing nickel-containing solid particle briquette

A solid particle, ferronickel technology, applied in the chemical industry, can solve the problems of increased drying cost, high cost, secondary oxidation of metal, etc.

Active Publication Date: 2014-06-04
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the particle size of the processed nickel-iron powder product is relatively fine, particles below 200 mesh usually account for more than 90%, so the specific surface is relatively large, so water glass is used as a binder, which requires a large amount and relatively high cost.
And the biggest disadvantag

Method used

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  • Method for preparing nickel-containing solid particle briquette
  • Method for preparing nickel-containing solid particle briquette

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Experimental program
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preparation example Construction

[0037] The method for preparing a nickel-containing solid particle briquette according to an embodiment of the present invention further includes: coating the nickel-containing solid particle provided above with an organic coating agent. According to specific embodiments of the present invention, the type and composition of the organic coating agent are not particularly limited. According to a specific example of the present invention, the organic coating agent used in the above method may include hydrocarbons that are liquid at normal temperature, for example, alkanes that are liquid at normal temperature.

[0038]According to a specific example of the present invention, the organic coating agent may be lubricating oil, such as gear oil, such as waste gear oil. This takes advantage of a further reduction in production costs. The "waste gear oil" described in the embodiments of the present invention refers to the waste gear oil replaced by engines, compressors, etc. The nick...

Embodiment 1

[0061] A laterite nickel ore grinding product is provided, with an average particle size of 75 microns and a water content of 1.23% by weight.

[0062] In a paddle mixer, the gear oil was mixed with the grinding product and stirred for 90 minutes, wherein, based on 100 parts by weight of the grinding product, the amount of gear oil was 0.3 parts by weight; in the paddle mixer, slaked lime was added and dry mixed for 3 Minutes, wherein, based on 100 parts by weight of the milled product, the consumption of slaked lime is 3.6 parts by weight; in the paddle mixer, add the syrup waste liquid and mix for 3 minutes, wherein, based on 100 parts by weight of the milled product, the syrup waste liquid The dosage is 6.0 parts by weight; the temperature of the material rises significantly, reaching 83° C. through testing. 3.15t / cm is used on a 400-ton hydraulic briquetting machine 2 Under pressure, the mixture obtained in the paddle mixer was compacted so as to obtain a diameter of 110 ...

Embodiment 2

[0064] A laterite nickel ore grinding product is provided, with an average particle size of 75 microns and a water content of 0.74% by weight.

[0065] In a paddle mixer, the gear oil was mixed with the grinding product and stirred for 90 minutes, wherein, based on 100 parts by weight of the grinding product, the amount of gear oil was 0.3 parts by weight; in the paddle mixer, slaked lime was added and dry mixed for 3 Minutes, wherein, based on 100 parts by weight of the milled product, the consumption of slaked lime is 3.6 parts by weight; in the paddle mixer, add the syrup waste liquid and mix for 3 minutes, wherein, based on 100 parts by weight of the milled product, the syrup waste liquid The dosage is 6.0 parts by weight; the temperature of the material rises significantly, reaching 83° C. through testing. 3.15t / cm is used on a 400-ton hydraulic briquetting machine 2 The mixture obtained in the paddle mixer was compacted under pressure so as to obtain a diameter of 110 m...

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Abstract

The invention discloses a method for preparing a nickel-containing solid particle briquette. The method comprises steps of (1) providing nickel-containing solid particles with average particle size below 75 micron; (2) wrapping the nickel-containing solid particles with organic coating agent; (3) mixing the wrapped nickel-containing solid particles obtained in step (2) with adhesive, wherein the adhesive contains syrup and at least one of hydrated lime and quick lime; (4) briquetting the mixture obtained in step (3), so as to obtain the nickel-containing solid particle briquette. The method can remarkably lower the cost for preparing the nickel-containing solid particle briquette, the prepared nickel-containing solid particle briquette can be used for smelting without drying, so that the industrial production technology for producing ferro-nickel alloy saves one step, and the production cost is remarkably lowered.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular, the invention relates to a method for preparing nickel-containing solid particle briquettes. Background technique [0002] Today's new methods of processing lateritic nickel ore mostly use rotary hearth furnaces instead of traditional rotary kilns to complete the reduction of nickel-iron minerals. Because it is a static hearth, it can avoid the high-temperature "ringing" phenomenon like a rotary kiln. The reduction temperature is relatively high, and the obtained direct reduction product is milled and the tailings are discarded to obtain a high-grade nickel-iron powder product with a particle size of less than 200 mesh (75 microns) accounting for about 90%. Usually, the high-grade ferronickel powdery product is melted and smelted in an electric arc furnace, and the electric arc furnace is only suitable for smelting bulk materials. Therefore, it is necessary to agglomerate the ferr...

Claims

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Application Information

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IPC IPC(8): C22B1/248
Inventor 吴道洪王建民郭盼盼刘涛赵飞翔陈家全高建
Owner SHENWU TECH GRP CO LTD
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