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Smelting process for rich manganese and equipment thereof

A smelting method and enrichment technology, which is applied in the integrated smelting field of enrichment and diversification of low-manganese ferroalloys, can solve the problems of increasing investment, reducing production efficiency, and damage to the bottom of the furnace body, so as to achieve full utilization of resources and economic benefits Remarkable, productivity-enhancing effect

Inactive Publication Date: 2009-10-14
韩江霖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high iron in manganese-rich slag leads to high cost of downstream ferroalloy factories and is also subject to foreign businessmen, because they must import low-iron manganese ore; and the process of patent No. 88104767.8 is not conducive to the diversification requirements of downstream customers for low-manganese ferroalloys
[0007] On the other hand, the raw material ore of manganese iron ore contains a certain amount of lead. Due to the large proportion of lead, the lead liquid deposits to the bottom of the furnace during the smelting process and may penetrate the refractory bricks at the bottom of the furnace, resulting in Damage will not only easily lead to safety accidents, but also increase investment and stop production due to repairs, seriously affecting normal production; in addition, the lead and zinc contained in manganese ore are likely to produce "lead-zinc tumors" during the smelting process, resulting in The abnormal flow of liquid materials in the reaction furnace will affect the quality of the product, and even cannot produce normally
[0008] In addition, the raw material ore of ferromanganese ore also contains a certain amount of zinc. Zinc dust is produced during the smelting process. As high as 200°C, high-temperature zinc dust is prone to combustion when it encounters oxygen in the air, often causing the outlet of the dust bag and even the entire dust bag to be burned, which not only affects normal production, but also increases production costs
[0009] In addition, the discharge port (mainly molten iron) and slag discharge port (mainly manganese and other slag) of the existing reaction furnace are set separately in different positions of the furnace body, which need to be set separately on the periphery of different sides of the furnace body The sites for the follow-up processing of products corresponding to the discharge port and the slag discharge port (such as stripping waste slag and forming) respectively occupy a large area, and there are inevitably problems of mutual influence between different processes, which not only increases production costs, but also increases production costs. reduce production efficiency

Method used

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  • Smelting process for rich manganese and equipment thereof
  • Smelting process for rich manganese and equipment thereof
  • Smelting process for rich manganese and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The main content of raw material manganese ore is shown in Table 1:

[0037] Table 1

[0038] Content (weight%)

[0039] Among them, A is the Tongling block, B is the Tongling block, C is the South African block, and D is the Indian powder. Manganese ore with the following weight ratio: 30% of A, 20% of B, 30% of C, and 20% of D are configured into mixed ore, and the Mn content in the obtained mixed ore is 17.5%, and the Fe content is 35.7%. These four kinds of manganese ores are processed into 20-40mm particle size.

[0040] And according to CaO / SiO 2 =0.35, then it is necessary to add 2.43Kg of quicklime containing 90% CaO to 100Kg of mixed ore to obtain a mixture. The particle size of quicklime is 3-10mm.

[0041] The coke is first-grade coke (ash content 12-12.5), and the particle size is processed to 25-50mm.

[0042] 1350Kg of the above-mentioned mixture and 450Kg of coke are added into the reaction furnace of the present invention. The oxygen-cont...

Embodiment 2

[0065] The main content of raw material manganese ore is shown in Table 4:

[0066] Table 4

[0067] Content (weight%)

mn

Fe

CaO

SiO 2

Pb

Zn

First

33.6

23

0.3

3.6

0.58

0.3

Second

5

45

0.84

11.2

0.6

0.8

[0068] Among them, A is the Australian block, and B is the Tongling block. Manganese ore in the following weight ratio: A 55% and B 45% are configured into a mixed ore, and the Mn content in the obtained mixed ore is 20.73%, and the Fe content is 32.9%. These two manganese ores are processed to a particle size of 20-40mm.

[0069] And according to CaO / SiO 2 =0.35, then it is necessary to add 2.25Kg of quicklime with a CaO content of 85% to 100Kg of mixed ore to obtain a mixture. The particle size of quicklime is 3-10mm.

[0070] The coke is first-grade coke (ash content 12-12.5), and the particle size is processed to 25-50mm.

[0071] Add 1400...

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Abstract

The invention provides a new smelting process for rich manganese and equipment thereof. Based on the prior art, appropriate measures are taken to treat polymetallic associated ores and lean manganese ores with very low manganese-iron ratio so as to achieve the purposes of increasing the proportion of the manganese in the slag, controlling the content of Mn in the cast iron according to actual demands and improving the grade of rich manganese slag. In addition, the smelting process for the rich manganese and the equipment thereof has low energy consumption, the equipment is advanced and the process is integrative.

Description

technical field [0001] The invention relates to an enrichment and smelting method and equipment for polymetallic associated ore and poor manganese ore, in particular to an integrated smelting method and equipment for manganese enrichment and diversified low-manganese ferroalloys. Background technique [0002] At present, my country and many other countries have a large number of polymetallic associated ores and poor manganese ores with a very low ratio of manganese to iron. For example, the content of manganese ore in Tongling, Anhui is 5-8% of Mn, 40-48% of Fe, and 0.1% of P. The content of Pb is 0.5%, and the content of Zn is 2%. For example, the content of manganese ore in Australia and South Africa is 32% of Mn, 24% of Fe, 0.8% of Pb, and 1.5% of Zn. This kind of ore has low grade and is difficult to smelt. The mechanical beneficiation method cannot separate and enrich the iron and manganese in this kind of ore, so that this kind of ore can neither make iron nor be used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/10C22B47/00C22B13/02C22B19/34
Inventor 韩江霖
Owner 韩江霖
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