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A method for producing high-quality sintered ore by using a variety of manganese ore powders

A technology of manganese ore powder and sintered ore, which is applied in the field of sintered ore, can solve the problems of low manganese ore manganese grade, insufficient improvement, and high gangue content

Active Publication Date: 2022-04-01
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing manganese sinter production technologies use a kind of manganese ore powder for sintering. If the manganese ore used has low manganese grade and high gangue content, the quality of the sintered product will not be significantly improved compared with the original one.
In the existing research, there are occasional technical proposals for using various manganese ore powders for proportioning, but the parameters of the beneficiation ore and the sintering method and the cooperation between the two need to be improved

Method used

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  • A method for producing high-quality sintered ore by using a variety of manganese ore powders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The weight ratio of manganese ore powder I: manganese ore powder II is 79%: 21%, quicklime 6.7% and coke powder 8% are used for batching, feeding and mixing in sequence. Add 7.7% clear water and stir. After mixing, put it into a cylinder mixer for granulation. The granulation time is 3 minutes. After the granulation is completed, put the green balls into a sintering cup with a base material and a size of Φ200×500mm for sintering. The mass of the green balls is 27.32kg, the mass of the base material is 3kg, the sintering time is 14 minutes, and the vertical sintering speed is : 35.71mm / min. After the sintering, the obtained manganese sintered ore was weighed, the output of the manganese sintered ore was 18.32kg, and the sintering rate was 67%. After the manganese sintered ore is cooled to room temperature, it is crushed and sieved to obtain the finished manganese sintered ore. After drum strength test (GBT8209-1987), drop strength test (YB / T4606-2017) and porosity test...

Embodiment 2

[0030] According to the ratio of manganese ore powder I: manganese ore powder II: 81%: 19%, quicklime 6.7%, and coke powder 10%, carry out batching and mixing. Add 8.6% clear water for stirring, and after mixing, put it into a cylinder mixer for granulation, and the granulation time is 3 minutes. After the granulation is completed, put the green balls into a sintering cup with a base material and a size of Φ200×500mm for sintering. The mass of the green balls is 25.20 kg, the mass of the base material is 3 kg, the sintering time is 11 minutes, and the vertical sintering speed is : 45.45mm / min. After the sintering, the obtained manganese sintered ore was weighed, the output of the manganese sintered ore was 19.34kg, and the sintering rate was 76.75%. After the manganese sintered ore is cooled to room temperature, it is crushed and sieved to obtain the finished manganese sintered ore. After the drum strength test and the drop strength test, the drum index of the manganese sint...

Embodiment 3

[0032] According to manganese ore powder I: manganese ore powder II: manganese ore powder III: 78%: 11%: 11%, quicklime 7.1%, coke powder 8%, carry out batching and mixing. Add 6.5% clear water and stir. After mixing, put it into a cylinder mixer for granulation. The granulation time is 3 minutes. After the granulation is completed, put the green balls into a sintering cup with a base material and a size of Φ200×500mm for sintering. The mass of the green balls is 25.71kg, the mass of the base material is 3kg, the sintering time is 13 minutes, and the vertical sintering speed is : 38.46mm / min. After the sintering, the obtained manganese sintered ore was weighed, the output of the manganese sintered ore was 17.66kg, and the sintering rate was 68.69%. After the manganese sintered ore is cooled to room temperature, it is crushed and sieved to obtain the finished manganese sintered ore. After the drum strength test and the drop strength test, the drum index of the manganese sinte...

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Abstract

The invention relates to a method for producing high-quality sintered ore by using a variety of manganese ore powder blends, including steps such as batching, mixing, sintering, cooling, crushing, and screening. The ore strength is high, and the porosity is higher within a reasonable range, so that the smelting process in the subsequent submerged arc furnace can show good reducibility, improve the furnace condition of the submerged arc furnace, and can greatly reduce the coke consumption and power consumption.

Description

technical field [0001] The invention belongs to the technical field of sintered ore, and in particular relates to a method for producing high-quality sintered ore by using various manganese ore powders for ore blending. Background technique [0002] Manganese ore is the most important manganese-containing raw material in the production of manganese alloys. Although the global manganese ore resources are very rich, the distribution is very uneven. Manganese ore resources are mainly distributed in South Africa, Brazil, Ukraine, Australia, Gabon, China and India and other countries. Most high-grade manganese oxide ores are mainly distributed in a few countries such as South Africa, Australia, Gabon, Brazil, India and Ukraine. However, with the increase of manganese ore mining around the world, the overall situation of manganese ore is less rich ore, more lean ore, less lump ore, and more fine ore. However, manganese powder ore and lean ore are directly put into the furnace, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/24C22B1/22C22B47/00
CPCC22B1/2406C22B1/22C22B47/00
Inventor 王海娟尹大军盛纲汪东社韩钰王龙星吴腾浩
Owner UNIV OF SCI & TECH BEIJING
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