Sintering ore additive

An additive and sinter technology, applied in the field of sinter additives, can solve the problems of high energy consumption, poor reduction characteristics, poor strength and reduction, etc.

Inactive Publication Date: 2007-03-07
娄底市裕德科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are several problems in the quality of high-alkalinity sintered ore: more serious pulverization, more cracks, and relatively complete development; after the alkalinity increases, monocalcium ferrite may be converted i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh raw materials by weight: composite mineralizer, boric acid 30kg, MgO 10kg; oxidation catalyst Fe 2 o 3 · MoO 3 20kg; oxygen enhancer sodium nitrate 25kg; protective agent calcium chloride 15kg.

[0025] Preparation method: crush the above-mentioned raw materials to ≤1mm, mix and stir according to the proportion for 5 minutes, and pack them separately.

[0026] test group

Additives added

Quantity (according to sintered

Ore weight‰)

Fuel ratio%

(weight)

vertical sintering speed

degree mm / min

Drum Index%

utilization factor

t / m 2 h

0

0

6.11

22.00

64

1.43

1

0.5

5,23

26.38

69

1.64

2

0.7

5.12

27.80

75

1.71

3

1.0

4.95

27.10

77

1.78

[0027] Note: The experimental group number 0 is the result of the experiment without additives.

[...

Embodiment 2

[0030] Weigh raw materials by weight: composite mineralizer, borax 15kg, MgO 5kg; oxidation catalyst Fe 2 o 3 · MoO 3 15kg; oxygen enhancer potassium permanganate 20kg; protective agent potassium chloride 15kg.

[0031] The preparation method is the same as in Example 1.

Embodiment 3

[0033] Weigh raw materials by weight: composite mineralizer, boric acid 40kg, MgO 10kg; oxidation catalyst Fe 2 o 3 · MoO 3 20kg; Oxygenating agent potassium nitrate 15kg; Protective agent Sodium chloride 15kg.

[0034] The preparation method is the same as in Example 1.

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PUM

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Abstract

The invention discloses a sintering additive, which comprises the following parts: 20wt%-60wt% composite mineralizer,10wt%-30wt% oxidizing catalyst,15wt%-40wt% oxygenation agent and 10wt%-30wt% protective. The additive can improve sintering oaring strength, which reduces energy consumption effectively.

Description

technical field [0001] The invention relates to a sintered ore additive, in particular to a sintered ore additive which can improve the metallurgical performance of the sintered ore and save energy and reduce consumption. Background technique [0002] The purpose of sintering pellets is to scientifically prepare and sinter iron ore and some materials to provide artificial rich ore with a certain particle size and good metallurgical properties for blast furnace smelting. [0003] In the current sinter production, it is generally required to produce sinter under the conditions of high alkalinity and low FeO, the mineral composition of high alkalinity sinter is less, and the microstructure is generally erosion or eutectic structure, in which magnetite The ore is consolidated together with the binder phase mineral calcium ferrite, etc., so that the sintered ore has good strength and reduction performance. Increasing the basicity of sintered ore can i...

Claims

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Application Information

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IPC IPC(8): C22B1/16
Inventor 钟文毅
Owner 娄底市裕德科技有限公司
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