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Method for preparing chrome ore pellets

A technology for pellets and chrome ore is applied in the field of preparing powder chrome ore pellets, which can solve the problems of energy consumption, increase cost, and high smelting power consumption, and achieve the effects of improving production efficiency, reducing dosage and simple process.

Inactive Publication Date: 2013-12-11
NINGXIA TIANYUAN MANGANESE LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consumes energy and increases costs; also does not solve the problem of high power consumption per unit product smelting

Method used

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  • Method for preparing chrome ore pellets
  • Method for preparing chrome ore pellets
  • Method for preparing chrome ore pellets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 2

Embodiment 2

[0036] Example 3

Embodiment 3

[0038] The finished ball obtained in the above embodiments of the present invention, the normal temperature strength test data are as follows: figure 2 .

[0039] The finished ball obtained in the above embodiments of the present invention, the high-temperature strength test data are as follows: image 3 .

[0040]The finished balls obtained in the above embodiments of the present invention are smelted in a submerged arc furnace, and the power consumption of the smelting of Cr50 per unit product in the production of ferrochrome is shown in Table 1.

[0041] Table 1

[0042] name Cr50 unit product smelting power consumption Remark Embodiment 1 finished ball 2725 KW*H / t Reach the first / second level of cleaner production indicators Embodiment 2 finished ball 2830 KW*H / t Reached the third level of clean production index Embodiment 3 finished ball 2650 KW*H / t Reach the first / second level of cleaner production indicators

[0043] Each...

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Abstract

The invention discloses a method for preparing chrome ore pellets and relates to a preparation method of cold-pressing pallets with raw material chrome ore (particle size of 10mm) in a ferrochrome metallurgy production process. The method is characterized by comprising the preparation process: adding a binder, a slag former, a reducing agent and a modifier to chrome ore, evenly mixing, adding water to regulate the humidity, conducting cold pressing to make pellets, then naturally curing and airing to prepare the finished pellets. The method for preparing the chrome ore pellets is simple in technique; the usage amount of auxiliary materials for producing ferrochrome can be reduced; the smelting power consumption of unit product of high-carbon ferrochrome Cr50 can be reduced; the high-carbon ferrochrome can be produced through single mineral. The method achieves the purposes of improving the production efficiency, lowering the cost and being energy-saving and consumption-reduction.

Description

technical field [0001] A method for preparing powdered chrome ore pellets relates to a method for preparing raw material powdered chrome ore (particle diameter<10mm) cold-pressed pellets in the ferrochrome metallurgical production process. Background technique [0002] Ferrochromium is an important product in ferroalloy products. Currently, the demand for ferrochromium is increasing due to the continuous increase in the production of stainless crude steel. A large demand for ferrochrome requires a large amount of chromite resources. my country is a country with poor chromite resources. Ferroalloy enterprises need to use a large amount of imported chromite ore, and its proportion has gradually increased, and it has reached more than 90% at present. [0003] The main raw materials for smelting high-carbon soldering iron are chromium ore, coke and silica. Among them, coke is used as reducing agent; silica is used as slagging agent. From the perspective of ferrochrome all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/242
Inventor 贾天将
Owner NINGXIA TIANYUAN MANGANESE LIMITED
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