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Method for sintering taihe vanadium and titanium magnet concentrates

A sintering method and magnetite concentrate technology, applied in the field of iron and steel metallurgy, can solve problems such as production and inability to use sintering methods, and achieve the effects of improving quality and output, improving mineral composition and structure, and promoting production

Inactive Publication Date: 2010-08-18
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is currently unable to use the sintering method to produce sintered ore with a ratio of more than 40% of the proportion of added Taihe vanadium-titanium magnetite concentrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 uses the method of the present invention to sinter Taihe vanadium-titanium magnetite concentrate

[0034] The proportion of Taihe vanadium-titanium magnetite concentrate is 50%, the ordinary fine ore is 15%, the proportion of returned ore is 20%, the proportion of slaked lime is 5%, the proportion of limestone is 5.5%, the proportion of coke powder is 4.5%, and the sintering alkalinity is 2.2. The particle size of coke powder is <3mm, the particle size of returned ore is <3mm, the particle size of ordinary fine ore is <5mm, and the ratio of quicklime digestion water is 1:0.5.

[0035] Mix Taihe vanadium-titanium iron concentrate with ordinary fine ore, slaked lime, limestone, coke powder, and returned ore into the mixing bin, then add water to the primary mixer for granulation for 4 minutes, and then enter the secondary mixer for granulation again Granulate in 4 minutes, the moisture content of the sintered mixture is 7.0%, and light pressing is carried out. ...

Embodiment 2

[0039] Embodiment two: use the method of the present invention to sinter Taihe vanadium-titanium magnetite concentrate:

[0040] Add 45% to Taihe vanadium-titanium magnetite concentrate, add 25% to ordinary fine ore, add 15% to return ore, add 6% to slaked lime, add 4.3% to limestone, add 4.7% to coke powder, and the sintering alkalinity is 2.3, coke powder particle size < 3mm, returned ore particle size < 3mm, ordinary powder ore particle size < 5mm, and the ratio of quicklime digestion water to 1:0.6.

[0041] Mix Taihe vanadium-titanium iron concentrate with ordinary fine ore, slaked lime, limestone, coke powder, and returned ore into the mixing bin, then add water to the primary mixer for granulation for 4 minutes, and then enter the secondary mixer for granulation again Granulate in 4 minutes, the moisture content of the sintered mixture is 7.2%, and light pressing is carried out.

[0042] Then, carry out sintering (sintering condition is the same as embodiment one). Th...

Embodiment 3

[0043] Embodiment three: Taihe vanadium-titanium magnetite concentrate is sintered using the method of the present invention:

[0044] The proportion of Taihe vanadium-titanium magnetite concentrate is 40%, the proportion of ordinary fine ore is 30%, the proportion of returned ore is 14%, the proportion of slaked lime is 7%, the proportion of limestone is 4.2%, the proportion of coke powder is 4.8%, and the sintering alkalinity is 2.3, coke powder particle size < 3mm, returned ore particle size < 3mm, ordinary powder ore particle size < 5mm, quicklime digestion water ratio 1:0.7.

[0045] Mix Taihe vanadium-titanium iron concentrate with ordinary fine ore, slaked lime, limestone, coke powder, and returned ore into the mixing bin, then add water to the primary mixer for granulation for 4 minutes, and then enter the secondary mixer for granulation again Granulate in 4 minutes, the moisture content of the sintered mixture is 7.5%, and light pressing is carried out.

[0046] Then...

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Abstract

The invention discloses a method for sintering taihe vanadium and titanium magnet concentrates. The mineral composition and the structure of sintered ores can be effectively improved by adopting the method so as to improve the quality and the yield of sintered ores. The method comprises the following steps of: 1) sieving coke breeze to be sintered to ensure that the grain size of all the coke breeze are less than 3 millimeters; 2) crushing the common coke breeze with a grain size of more than 5 millimeters in the sintering raw materials; 3) removing the returned mine with a grain size of more than 3 mm by sieving; 4) adding 5 to 8 percent of slaked lime into the sintering raw material; 5) adding the taihe vanadium and titanium magnet concentrates, common ore fines, the slaked lime, limestone, coke powder and the returned mine into a mixing cabin, adding water into the mixing cabin and blending the mixture; and 6) filling the mixed material into a sintering cup and performing ignition and air draft to sinter the concentrates. When the method of the invention is used, the calcium ferrite content of the sintered ore is increased by over 5 to 10 percent, the strength of a sintered ore drum is increased by 1.2 to 15 percent, the rate of finished products is increased by 1.2 to 3.0 percent and the yield is increased by 2.3 to 4.0 percent.

Description

technical field [0001] The patent of the invention belongs to the technical field of iron and steel metallurgy, and in particular relates to a sintering method of high-titanium vanadium-titanium magnetite concentrate. Background technique [0002] The vanadium-titanium magnetite concentrate in Panxi area contains high TiO 2 , MgO, Al 2 o 3 , and SiO 2 Low content, coarse concentrate particle size, poor spheroidization and water absorption, not easy to sinter, and brittle perovskite is formed during the sintering process, sintered calcium ferrite has less bonding phase at low temperature and its shape is similar to that of ordinary sintered ore ferrite Calcium is different, resulting in poor sinter strength and low yield. Studies have shown that the utilization factor of the sintering machine is only 1.0-1.1t / (m 2 .h), the finished product rate is less than 50.0%, and the drum strength of sintered ore is only about 65.0%. By adding about 15.0% to 30.0% of ordinary powde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
Inventor 饶家庭张义贤向绍红
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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