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Method and device for utilizing scheelite concentrate smelting slag and application of scheelite concentrate smelting slag

A technology of scheelite and mixing device, which is applied in the petroleum industry, solid fuel, fuel, etc., to achieve the effect of reducing production cost, reducing difficulty, and significant economic benefits

Inactive Publication Date: 2017-05-10
JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP HLDG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a utilization method of scheelite slag, a utilization device of scheelite slag, and the use of scheelite slag, which can solve the problem of harmless disposal of scheelite slag in the prior art, and can also prevent Sulfur dioxide and nitrogen oxides produced by sulfur-containing coal combustion enter the tail gas to relieve the pressure of desulfurization and denitrification of industrial coal boiler tail gas

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  • Method and device for utilizing scheelite concentrate smelting slag and application of scheelite concentrate smelting slag
  • Method and device for utilizing scheelite concentrate smelting slag and application of scheelite concentrate smelting slag

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Embodiment

[0039] Scheelite slag and coal enter the mixing device 1 from the feeding device 11, close the feeding device 11, start the transmission device 14, the mixing material rotates with the transmission shaft 13, and after the materials in the mixing device 1 are mixed evenly, open the outlet The material device 12 sends the mixed materials into the combustion device 2 for combustion, the slag is discharged from the slag discharge device 22, and the tail gas is discharged from the tail gas discharge device 21 into the tail gas treatment device 3.

[0040] In another embodiment, scheelite slag and coal are added from the feeding device 11, the transmission device 14 is started, the anchor stirring device 15 rotates in the mixing device 1, and the materials in the mixing device 1 are driven to stir together, thereby achieve the purpose of mixing. After mixing evenly, the material is discharged from the discharge device 12 and enters the combustion device 2.

[0041] In the combustio...

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Abstract

The invention provides a method for utilizing scheelite slag. The method comprises the following steps: uniformly mixing scheelite slag with fuel coal; and delivering the mixed material into a combustion chamber of a coal boiler for combusting. The method can be used for solving the problem that scheelite slag requires innoxious treatment, and can prevent sulfur dioxide and nitrogen oxide generated in combustion of sulfur-containing fuel coal from entering tail gas, so that the stress of desulfurization and denitrification for tail gas of an industrial coal boiler can be relieved. The invention further provides a device for utilizing the scheelite slag and an application of the scheelite slag as a sulphur-fixing agent.

Description

technical field [0001] The present invention relates to a utilization method, utilization device and use of scheelite slag, in particular to a utilization method, utilization device and use of scheelite slag as a sulfur-fixing agent in the combustion of sulfur-containing coal. [0002] In this specification, the term "scheelite slag" is the abbreviation of scheelite concentrate smelting slag. Background technique [0003] The main components of scheelite slag are calcium, manganese, iron carbonate, silicon dioxide, and a small amount of sodium carbonate and tungsten. The main component of scheelite slag is calcium carbonate. [0004] With the continuous improvement of tungsten smelting level, the tungsten content in tungsten smelting slag is getting lower and lower, and the recycling value is also reduced. Tungsten smelting slag loses the value of utilization and becomes a waste that needs to be disposed of. After the solid-liquid separation of the smelting slag, the attach...

Claims

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Application Information

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IPC IPC(8): C10L9/10
CPCC10L9/10
Inventor 徐双谢金明张威
Owner JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP HLDG CO LTD
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