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Stone coal vanadium ore oxidizing, crystal breaking, roasting and vanadium extracting comprehensive utilization system

A kind of stone coal vanadium and crystal breaking technology, applied in the fields of silicon oxide, silicon dioxide, chemical industry, etc., can solve the problems of low processing capacity, high operating cost, environmental pollution and so on

Active Publication Date: 2020-11-03
上海逢石科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of complex process flow, low processing capacity, high operating cost and serious environmental pollution in the existing technical process of extracting vanadium from stone coal, the present invention provides a comprehensive utilization system for vanadium extraction by oxidizing, cracking, roasting, and roasting of vanadium ore from stone coal

Method used

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  • Stone coal vanadium ore oxidizing, crystal breaking, roasting and vanadium extracting comprehensive utilization system

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Experimental program
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Effect test

Embodiment 1

[0067] The structure of the comprehensive utilization system for vanadium extraction by oxidative breaking crystal roasting of stone coal vanadium ore is as follows: figure 1 As shown, it includes a crusher 1, a high-pressure roller mill 2, a feed bin 4, a screw feeder 6, a suspension decarburization roaster 7, a first cyclone separator 8, a suspension crystal breaking roaster 9, and a second cyclone separation Device 10, cooler 11, acid-mixed aging furnace 13, first leaching tank 14, first filtering device 15, second leaching tank 16, second filtering device 17, pH value adjustment tank 18, third filtering device 19, drying Device 20, dust removal device 25, chimney 26, first burner 27, second burner 28;

[0068] The discharge port of the crusher 1 is opposite to the feed port of the high pressure roller mill 2, the discharge port of the high pressure roller mill 2 is opposite to the first feeding belt 3, and the discharge end of the first feeding belt 3 is connected to the f...

Embodiment 2

[0086] The system structure of the comprehensive utilization of vanadium extraction by oxidizing, cracking, crystal-breaking, roasting and roasting of stone coal vanadium ore is the same as in embodiment 1;

[0087] The stone coal vanadium ore used contains SiO by mass percentage 2 61.01%, Al 2 o 3 7.81%, V 2 o 5 0.79%, TFe2.76%, CaO 2.91%, MgO 1.33%, Na 2 O 1.33%, C 12.39%;

[0088] Method is with embodiment 1, and difference is:

[0089] (1) The part that is ground to a particle size of ≤0.074mm accounts for 66% of the total mass;

[0090] (2) The decarburization reaction is carried out at 800°C, and the residence time of fine ore in the suspension decarburization roaster is 40 minutes; the volume flow ratio of oxygen and air is 1:2;

[0091] (3) The crystal breaking oxidation reaction is carried out at 850°C, and the residence time of the decarburized material in the suspended crystal breaking roaster is 90 minutes; the volume flow ratio of oxygen and air is 1:5; ...

Embodiment 3

[0098] The system structure of the comprehensive utilization of vanadium extraction by oxidizing, cracking, crystal-breaking, roasting and roasting of stone coal vanadium ore is the same as in embodiment 1;

[0099] The stone coal vanadium ore used contains SiO by mass percentage 2 60.32%, Al 2 o 3 7.14%, V 2 o 5 0.93%, TFe2.17%, CaO 3.45%, MgO 1.69%, Na 2 O 1.18%, C 10.56%;

[0100] Method is with embodiment 1, and difference is:

[0101] (1) The part that is ground to a particle size of ≤0.074mm accounts for 70% of the total mass;

[0102] (2) The decarburization reaction is carried out at 850°C, and the residence time of fine ore in the suspension decarburization roaster is 30 minutes; the volume flow ratio of oxygen and air is 1:3;

[0103] (3) The crystal breaking oxidation reaction is carried out at 900°C, and the residence time of the decarburized material in the suspended crystal breaking roaster is 60 minutes; the volume flow ratio of oxygen and air is 1:8; ...

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Abstract

The invention discloses a stone coal vanadium ore oxidizing, crystal breaking, roasting and vanadium extracting comprehensive utilization system. A crusher, a high-pressure roller mill, a first feeding belt, a feeding bin, a second feeding belt and a spiral feeder are sequentially matched with one another, and the discharging end of the spiral feeder is matched with a feeding port of a suspensiondecarburization roasting furnace; the suspension decarburization roasting furnace, a first cyclone separator, a suspension crystal breaking roasting furnace, a second cyclone separator and a cooler are sequentially communicated in series; a combustor and an air inlet are respectively arranged at the bottoms of the suspension decarburization roasting furnace and the suspension crystal breaking roasting furnace; an air inlet of the cooler is communicated with an air compressor; and a discharging hole in the bottom of the cooler is matched with a feeding hole of an acid mixing curing furnace; andthe acid mixing curing furnace, a first leaching tank, a first filtering device, a second leaching tank, a second filtering device, a pH value adjusting tank and a third filtering device are sequentially connected in series and matched with one another. The system provided by the invention is stable in operation, large in treatment capacity, low in energy consumption and cost of unit treatment capacity, and capable of easily controlling product properties and easily achieving large-scale equipment.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a comprehensive utilization system for vanadium extraction by oxidizing, crystal breaking and roasting of stone coal vanadium ore. Background technique [0002] Vanadium is an important strategic material, which is widely used in steel, alloy, aerospace, medical and health, electronics and other fields. Vanadium-titanium-magnetite and stone coal are the main vanadium resources; at present, the main techniques for extracting vanadium from stone coal include roasting leaching, direct leaching and external force leaching. The roasting and leaching process includes sodium roasting vanadium extraction process, calcium roasting vanadium extraction process and composite additive roasting vanadium extraction process, and direct leaching process includes direct acid leaching vanadium extraction process, oxidative acid leaching vanadium extraction process and fluorin...

Claims

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Application Information

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IPC IPC(8): C22B34/22C22B1/10C22B3/02C22B3/04C22B3/12C22B3/22C22B3/44C01B33/12
CPCC22B34/22C22B1/10C22B3/02C22B3/04C22B3/12C22B3/22C22B3/44C01B33/12Y02P10/20Y02P20/10
Inventor 李艳军韩跃新谢瑞琦高鹏袁帅孙永升
Owner 上海逢石科技有限公司
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