Method and system for treating schreyerite

A vanadium-titanium ore grinding technology, applied in the field of metallurgy, can solve the problems of titanium resource loss, energy consumption, material consumption, high cost, difficulty in meeting high-efficiency, low-carbon, green production, etc.

Inactive Publication Date: 2017-06-27
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the Panzhihua Iron and Steel blast furnace was put into operation, the annual output of perovskite-type blast furnace slag is more than 3 million tons of solid waste (over 100 million tons have been accumulated...

Method used

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  • Method and system for treating schreyerite
  • Method and system for treating schreyerite
  • Method and system for treating schreyerite

Examples

Experimental program
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Effect test

Embodiment 1

[0070] The raw ore is crushed and finely ground until the vanadium-titanium ore powder with a particle size of less than 75 μm accounts for about 50% by weight and sent to a magnetic separator for rough separation. , Table 2 and Table 3. During roughing, the magnetic field strength is 2000Oe. After roughing, the vanadium-titanium ore is transported to the mine through a belt, and the water is dried to 4% for use. After roughing, the vanadium-titanium ore powder is transported to the fluidized Bed silo, the furnace material is fed from the middle of the fluidized bed to the preheated fluidized bed through a screw feeder, and the iron ore is preheated to 400°C and sent to the oxidation roasting fluidized bed at a roasting temperature of 1100°C to oxidize the iron in the iron ore It is trivalent iron, destroys the phase structure of vanadium-titanium magnetite, iron-containing black titanite and magnesium-containing black titanite, and roasts for 30 minutes. The oxidized and roas...

Embodiment 2

[0085] The raw ore is crushed and finely ground until the vanadium-titanium ore powder with a particle size of less than 75 μm accounts for about 40% by weight and sent to a magnetic separator for rough separation. , Table 2 and Table 3. During roughing, the magnetic field strength is 1800Oe. The vanadium-titanium ore after roughing is transported to the mine through a belt, and the water is dried to 4% for use. The vanadium-titanium ore powder after roughing is transported to the fluidized bed silo, the furnace material is fed from the middle of the fluidized bed to the preheated fluidized bed through a screw feeder, and the vanadium-titanium ore powder is preheated to 400°C and sent to the oxidation roasting fluidized bed at a roasting temperature of 900°C. The iron in the ore is oxidized to ferric iron, which destroys the phase structure of vanadium-titanium magnetite, iron-containing black titanite and magnesium-containing black titanite. The roasting time is 30 minutes, a...

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Abstract

The invention discloses a method and a system for treating schreyerite. The method comprises the following steps: the schreyerite is finely grinded to obtain schreyerite powder; the schreyerite powder is supplied into an oxidation roasting fluidized bed for oxidation roasting treatment to obtain an oxidation roasting product; coal powder is mixed with the oxidation roasting product to supply into a magnetic roasting fluidized bed for magnetic roasting treatment to obtain a magnetic roasting product; and the ore grinding-magnetic separation treatment is performed for the magnetic roasting product to obtain titanium slag and concentrates. The method for treating the schreyerite can effectively increase the resource utilization rate of the schreyerite, reduces the production cost and the energy consumption, and obtains high-quality concentrates and titanium slag.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular, the invention relates to a method and a system for processing vanadium-titanium ore. Background technique [0002] Ore sorting is an important part of the development and utilization of vanadium-titanium ore resources. Its main purpose is to enrich the valuable minerals in the ore into concentrates (artificial rich ore) suitable for blast furnace smelting, and to recover various metal products at the same time. However, the traditional blast furnace process and foreign non-blast furnace process to smelt vanadium-titanium concentrate only recover iron and vanadium, and titanium enters the blast furnace slag. Because the titanium grade is too low, there is no economical and reasonable recovery value, resulting in a large loss of titanium resources. Taking Panzhihua Iron and Steel as an example, about 11.5 million tons of vanadium-titanium magnetite are mined every year, including ...

Claims

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Application Information

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IPC IPC(8): C22B1/10C22B34/12C22B34/22B03C1/02
CPCC22B1/10B03C1/02C22B34/1209C22B34/22
Inventor 邓君薛逊曹志成李志远冯鲁兴唐敬坤韩志彪吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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