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Method for preparing high basicity sinter through acid high chromium type vanadium titanium magnetite

A technology of vanadium-titanium magnetite and sintered ore, which is applied in the field of ironmaking raw materials, can solve the problems of poor air permeability of the sintered material layer, uneven particle size of the sintered material, and poor granulation performance, so as to avoid the firing rate and improve the conversion rate. Drum strength and the effect of increasing the firing rate

Active Publication Date: 2018-04-20
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the importance of Hongge high-chromium vanadium-titanium magnetite resources, there is no technology to apply it to blast furnace production and smelting technology at home and abroad. At the same time, the research on its sinter performance is still blank, and the existing When preparing Panxi Hongge high-chromium vanadium-titanium sintered ore by technology, the granulation performance is poor, the particle size of the sintered material is uneven, the air permeability of the sintered material layer is poor, the sintering process is easy to segregate, the yield is low, and the drum strength is lower than the average Level
Therefore, it is more difficult to produce sintered ore from high-chromium vanadium-titanium magnetite

Method used

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  • Method for preparing high basicity sinter through acid high chromium type vanadium titanium magnetite

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Experimental program
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Effect test

Embodiment 1

[0046] A method for preparing high-basicity sintered ore from acidic high-chromium type vanadium-titanium magnetite, such as figure 1 As shown, the method includes:

[0047] 1. Mixing

[0048] The materials used for sintering are 35.9 kg of acidic high-chromium vanadium-titanium magnetite, 30 kg of ordinary magnetite, 1 kg of blast furnace dust, 1 kg of magnetic separation powder, 20 kg of returned ore, 12.2 kg of lime powder, 2.5 kg of coke, and Powder 2.5kg. Weigh the raw materials according to the above ingredients, put them into the mixing machine for ore mixing, and use a sprayer to spray mist water into the mixing materials during the mixing process. The amount of water accounts for 6% of the total weight of the raw materials, and the mixing time is 10 minutes. Afterwards, stew the material, cover the mixer and simmer the material for 10 minutes, and continue to mix the material for 5 minutes after the stewing is completed.

[0049] 2. Granulation

[0050] Pour the m...

Embodiment 2

[0066] A method for preparing high-basicity sintered ore from acidic high-chromium type vanadium-titanium magnetite, the present embodiment is on the basis of embodiment 1, and concrete operation steps are as follows:

[0067] 1. Mixing

[0068] The materials for sintering are 34.1kg of acidic high-chromium vanadium-titanium magnetite, 32 kg of ordinary magnetite, 1kg of blast furnace dust, 1kg of magnetic separation powder, 20kg of returned ore, 14kg of lime powder, 2kg of coke, and 3kg of pulverized coal. . Get raw material by weighing above-mentioned batching, put into the mixing machine and carry out ore mixing, in the mixing process, spray mist water and account for 6.2% of total weight, mixing time 12min, stew material 10min, continue mixing material 5min.

[0069] 2. Granulation

[0070] Pour the mixed raw materials into the cylinder granulator to start granulation. During the granulation process, spray mist water accounting for 2.4% of the total weight of raw materia...

Embodiment 3

[0086] This embodiment is on the basis of embodiment 1, concrete operation is as follows:

[0087] 1. Mixing

[0088] The materials used for sintering are 33.4kg of acidic high-chromium vanadium-titanium magnetite, 30 kg of ordinary magnetite, 1 kg of blast furnace dust, 0.5 kg of magnetic separation powder, 20 kg of returned ore, 14.6 kg of lime powder, and 1.5 kg of coke. Coal powder 3.5kg. Weigh the raw materials according to the above ingredients and put them into the mixer for ore mixing. During the mixing process, spray mist water to account for 6.5% of the total weight of the raw materials. The mixing time is 15 minutes, stew for 10 minutes, and continue mixing for 5 minutes.

[0089] 2. Granulation

[0090] Pour the mixed raw materials into the cylinder granulator to start granulation. During the granulation process, spray mist water to account for 2%, and granulate for 6 minutes to obtain sintering pellets of Hongge high-chromium vanadium-titanium sintered ore. , B...

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Abstract

The invention relates to a method for preparing high basicity sinter through acid high chromium type vanadium titanium magnetite. According to the method, raw materials of high chromium type vanadiumtitanium magnetite and the like are mixed, braised, mixed, granulated, discharged, distributed, ignited, sintered, broken and screened, and the high basicity sinter is obtained. The high basicity sinter prepared through the method is high in burning rate and high in reduction, has the good ventilation during softening dropping, and is good in molten drop performance.

Description

technical field [0001] The invention belongs to the production technology of ironmaking raw materials, in particular a method for preparing high-basicity sintered ore from acidic high-chromium vanadium-titanium magnetite. Background technique [0002] Sichuan Panzhihua Hongge Mine is a reserve resource of inland iron and steel. It is a high-chromium and high-titanium vanadium-titanium magnetite with a reserve of 3.55 billion tons. Because it is an iron resource and associated with more than ten available elements, especially iron, titanium, vanadium, chromium, etc., and the rich chromium resource has practical significance for reducing China's annual high cost of importing chromium. [0003] On the one hand, Hongge vanadium-titanium magnetite can meet the demand for iron ore raw materials for blast furnace production. On the other hand, due to the high content of titanium, chromium and vanadium in Hongge vanadium-titanium magnetite, it can develop high value-added Titanium,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24C22B1/16
CPCC22B1/16C22B1/24
Inventor 薛向欣汤卫东杨松陶杨合张立恒程功金高子先
Owner NORTHEASTERN UNIV
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