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Method and device for dechlorinating and decarbonizing solid samples

A sample, solid-state technology, applied in the field of chlorine and carbon removal, can solve problems such as limiting large-scale utilization

Inactive Publication Date: 2017-01-04
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of chloride ions and free carbon in the tailings of titanium extraction, its large-scale utilization in the construction industry is limited.

Method used

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  • Method and device for dechlorinating and decarbonizing solid samples

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment is used to illustrate the method provided by the present invention for removing chlorine and carbon from solid samples

[0040] The chloride ion content in the titanium extraction tailings used in this embodiment is 2.96% by weight, and the free carbon content is 6.94% by weight. The titanium extraction tailings also contain 26.92% by weight of CaO, 8.01% by weight of MgO, 26.75 wt% SiO 2 , 5.98 wt% TiO 2 , 13.6 wt% Al 2 o 3 With 2.3% by weight of TiC and 0.7% by weight of FeO, 0.61% by weight of MnO and 0.77% by weight of TiO, the content of soluble chloride is 7.42% by weight.

[0041] 5 kg of titanium tailings are sent into the fluidized bed 1 through the solid inlet of the fluidized bed 1, and the first part of air is introduced from the gas inlet of the fluidized bed 1 to make it fluidized, and the first part of the air is made by an air compressor 2 of compressed air. The gas velocity of the first part of air introduced is 0.15m / s. Use resist...

Embodiment 2

[0044] This embodiment is used to illustrate the method provided by the present invention for removing chlorine and carbon from solid samples

[0045] The chloride ion content in the titanium extraction tailings used in this embodiment is 2.50% by weight, and the free carbon content is 7.81% by weight. The titanium extraction tailings also contain 32.25% by weight of CaO, 9.11% by weight of MgO, 24.12 wt% SiO 2 and 7.03 wt% TiO 2 , 12 wt% Al 2 o 3 With 2% by weight of TiC and 0.35% by weight of FeO and 0.31% by weight of MnO, the content of soluble chloride is 5.02% by weight.

[0046] 5 kg of titanium tailings are sent into the fluidized bed 1 through the solid inlet of the fluidized bed 1, and the first part of air is introduced from the gas inlet of the fluidized bed 1 to make it fluidized, and the first part of the air is made by an air compressor 2 of compressed air. The gas velocity of the first part of air introduced is 0.3m / s. Use electric resistance furnace 4 to...

Embodiment 3

[0049] This embodiment is used to illustrate the method provided by the present invention for removing chlorine and carbon from solid samples

[0050] The chloride ion content in the titanium extraction tailings used in this embodiment is 3.52% by weight, and the free carbon content is 6.49% by weight. The titanium extraction tailings also contain 28.02% by weight of CaO, 7.11% by weight of MgO, 27.0 wt% SiO 2 , 5.05 wt% TiO 2 , 14.01 wt% Al 2 o 3 And 1.98% by weight of TiC, 0.12% by weight of FeO, and 0.43% by weight of TiO, the content of soluble chloride is 6.27% by weight.

[0051] The chlorine and carbon removal treatment was carried out according to the method of Example 1, the difference being that the gas velocity of the first part of air introduced was 0.2m / s. Use resistance furnace 4 to heat the fluidized bed to 650°C, then feed water vapor at 130°C from the gas inlet of fluidized bed 1, the gas velocity of water vapor is 0.04m / s, and the time for feeding steam i...

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Abstract

The invention relates to the field of comprehensive utilization of vanadium-titanium resources, and discloses a method and device for dechlorinating and decarbonizing solid samples. The solid samples comprise chloride ions and uncombined carbon, the method includes the steps: leading first part of air to enable the solid samples to fluidize; performing further contact for fluidized solid samples and vapor under the condition that the temperature is higher than or equal to 500 DEG C. The temperature of the vapor is higher than or equal to 110 DEG C. The device comprises a fluidized bed (1), an air compressor (2), a vapor generator (3) and a resistance furnace (4), the air compressor (2) and a gas outlet of the vapor generator (3) are respectively connected with a gas inlet of the fluidized bed (1), and the resistance furnace (4) is used for heating the fluidized bed (1). According to the method and the device, chloride ions and uncombined carbon in the solid samples, particularly in extracted titanium tailing slag can be simultaneously removed, and both dechlorinating ratio and decarbonizing ratio are 85% or more.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of vanadium and titanium resources, in particular to a method and device for removing chlorine and carbon from solid samples. Background technique [0002] Panzhihua Iron and Steel adopts the process of smelting vanadium-titanium magnetite in ordinary blast furnace, which realizes the large-scale economical smelting of vanadium-titanium magnetite. Total about 52% TiO 2 Along with the iron concentrate into the blast furnace slag, TiO is formed 2 High titanium blast furnace slag with a content of 21-25%. Panzhihua Iron & Steel adopts the "high-temperature carbonization-low-temperature chlorination" process (blast furnace slag is smelted with carbon at high temperature to obtain carbide slag, and the main reaction component of carbide slag, TiC, can be chlorinated at an apparent temperature of 400°C), which can make titanium-containing blast furnace slag TiO 2 TiCl 4 Extracted in the for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34
CPCG01N1/34
Inventor 黄富勤尹国亮王云陆平杨仰军
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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