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Novel binding agent for normal temperature pelletized and cured iron-containing mud cold-cured pellet

A technology of cold-setting pellets and binders, which is applied in blast furnaces, furnace types, furnaces, etc., and can solve problems such as environmental secondary pollution, high energy consumption for consolidation, and increased flux consumption in the smelting process.

Inactive Publication Date: 2009-12-16
SHANGHAI PANLONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to change the traditional binder of iron-containing dust and sludge cold solidification pellets, which is mostly a primary resource; high energy consumption for consolidation, unsatisfactory reducibility during smelting and unsatisfactory thermal strength during reduction; increase the consumption of flux in the smelting process amount; cause secondary pollution to the environment and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0005] Embodiment 1 prepares 100 kilograms of novel binders, counts 39.1Kg of calcium oxide, 32.2Kg of silicon dioxide, 11.6Kg of magnesium oxide, 15.3Kg of aluminum oxide, 1.4Kg of iron oxide, 0.4Kg of manganese oxide, and the specific surface area is controlled as 430m 2 / Kg, under normal pressure ball conditions, add 7% of the new binder to the pre-prepared iron-containing dust, first dry mix, then add appropriate amount of water, stir evenly, and mix well through the belt conveyor The material is transported to the silo of the atmospheric pressure briquetting machine, and after briquetting, it is naturally dried and consolidated under normal temperature, and then put into the finished product warehouse for stacking.

Embodiment 2

[0006] Embodiment 2 prepares 100 kilograms of novel binders, calculates 33Kg of calcium oxide, 40Kg of silicon dioxide, 10Kg of magnesium oxide, 15Kg of aluminum oxide, 1Kg of iron oxide, 1Kg of manganese oxide, and the specific surface area is controlled to be 430m 2 / Kg, under normal pressure ball conditions, add 7% of the new binder to the pre-prepared iron-containing dust, first dry mix, then add appropriate amount of water, stir evenly, and mix well through the belt conveyor The material is transported to the silo of the atmospheric pressure briquetting machine, and after briquetting, it is naturally dried and consolidated under normal temperature, and then put into the finished product warehouse for stacking.

Embodiment 3

[0007] Embodiment 3 prepares 100 kilograms of novel binders, calculates 45Kg of calcium oxide, 38Kg of silicon dioxide, 5Kg of magnesium oxide, 11Kg of aluminum oxide, 0.1Kg of iron oxide, 0.9Kg of manganese oxide, and the specific surface area is controlled to be 430m 2 / Kg, under the condition of high-pressure ball pressing, add 4% of the new binder to the pre-prepared iron-containing dust, first dry mix, then add appropriate amount of water, stir evenly, and pass the well-mixed mixture through the belt conveyor Transport to the silo of the atmospheric pressure ball machine, after the ball is pressed, it will be naturally dried and consolidated under normal temperature, and it will be stacked in the finished product warehouse for future use. The use of new binders can not only produce high-quality cold-set pellets containing iron-containing dust and sludge for use in blast furnaces, but also produce cold-set pellets containing iron-containing dust and sludge and carbon for us...

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Abstract

The invention discloses a new typed adhesive with iron dust mud solidifying ball, which comprises the following parts: calcium oxide, silicon oxide, magnesium oxide, dialuminum trioxide, ferric oxide and manganese oxide, wherein several oxides are different silicate and alumino-silicate; the mineral material is vitreum and microcrystal; the new adhesive is grinded into fine powder, whose specific surface area is 420-460 m2 per kg. The invention can produce excellent quality iron dust mud solidifying ball under normal temperature and pressure without heating and drying.

Description

technical field [0001] The invention relates to a binder for producing iron-containing dust and mud cold-fixed pellets, in particular to a kind of pre-melted secondary resource, which can obtain high-quality iron-containing dust and mud cold-fixed pellets by pressing the ball at room temperature new binders. Background technique [0002] In addition to being used as slagging agent and coolant for converter steelmaking, cold solidified pellets containing iron dust and mud can also be used for the production of direct reduced iron (DRI). At present, the binders generally used in the production of iron-containing dust and mud cold-set pellets include inorganic binders (such as Portland cement, bentonite, water glass, etc.), organic binders (such as syrup, asphalt, coal tar, carboxymethyl Starch sodium, etc.), composite binders (such as slaked lime + dextrin, bentonite + pulp waste liquid, etc.). If portland cement is used for consolidation, firstly, the dosage is large, and s...

Claims

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Application Information

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IPC IPC(8): C22B1/242C21B5/00C21B13/00
Inventor 王兆达江浦琼徐兵徐永斌
Owner SHANGHAI PANLONG IND
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