Metallurgical molded coal manufactured by raw materials containing humic acid

A humic acid and raw material technology, applied in the field of metallurgical briquette, can solve the problems of high production cost, complicated process, environmental pollution, etc., and achieve the effect of low ignition point and cost saving

Inactive Publication Date: 2010-01-20
SHANXI LUAN MINING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a metallurgical briquette made of raw materials containing humic acid in order to solve the problems of complicated process, high production cost and environmental pollution in the existing briquette manufacturing technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, a kind of metallurgical briquette made with humic acid-containing raw material, is made from the raw material of following weight ratio:

[0018] Coal powder 50%, weathered coal or lignite 30%, bentonite 8%, sulfur fixer 2%, NaOH solution 15%, raw coal crushed to below 3mm, weathered coal ground to below 100 mesh, bentonite particle size below 200 mesh, in Coal, weathered coal or lignite, bentonite and sulfur-fixing agent are mixed evenly in the mixer, and the lye added is fully stirred and then left for 30 minutes, and then pressed and formed on an improved roller briquetting machine, and the formed briquettes are air-dried or heated to dry. Finished ball. The concentration of NaOH solution is 10%.

[0019] 15% of this briquette is added in the blast furnace, and the blast furnace ironmaking operation runs smoothly. The smelting coke ratio is 315kg / t, the fuel ratio is 491kg / t, and the coke is saved by about 13%. The briquette is used as fuel in the met...

Embodiment 2

[0020] Embodiment 2, a kind of metallurgical briquette made with humic acid-containing raw material, is made from the raw material of following weight ratio:

[0021] 90% of pulverized coal, 1% of weathered coal or lignite, 1% of bentonite, 5% of sulfur-fixing agent, caustic solution 3, raw coal crushed to below 3mm, weathered coal ground to below 100 mesh, bentonite particle size below 200 mesh, Mix coal, weathered coal or lignite, bentonite and sulfur-fixing agent evenly in a mixer, add lye, fully stir and let stand for 30 minutes, press and form on an improved double-roller briquetting machine, and the formed briquettes are air-dried or heated to dry become the finished ball. The concentration of NaOH solution is 30%.

[0022] 13% of this briquette is added in the blast furnace, and the blast furnace ironmaking operation runs smoothly. The smelting coke ratio is 315kg / t, and the fuel ratio is 491kg / t, saving about 12% of coke. The briquette is used as fuel in the metallur...

Embodiment 3

[0023] Embodiment 3, a kind of metallurgical briquette made with humic acid-containing raw material, is made from the raw material of following weight ratio:

[0024] 60% of pulverized coal, 20% of weathered coal or lignite, 6% of bentonite, 4% of sulfur-fixing agent, 10% of caustic solution, raw coal crushed to below 3mm, weathered coal ground to below 100 mesh, bentonite particle size below 200 mesh, Mix the coal, weathered coal or lignite, bentonite and sulfur-fixing agent evenly in the mixer. After fully stirring the lye solution, let it stand for 30 minutes, and then press and form it on an improved roller briquetting machine. The formed briquettes are air-dried or heated to dry. become the finished ball. The concentration of NaOH solution is 60%.

[0025] 14% of this briquette is added in the blast furnace, and the blast furnace ironmaking operation is forward, the smelting coke ratio is 315kg / t, the fuel ratio is 491kg / t, and the coke is saved by about 13%. The brique...

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PUM

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Abstract

The invention relates to an industrial composite binding agent molded coal, in particular to a metallurgical molded coal manufactured by raw materials containing humic acid. The molded coal directly takes weathered coal and brown coal as the raw materials which are mixed with coal dust; after being processed by special treatment, the mixture is pressed by a ball press to be molded. The manufactured molded coal has the drying cold strength of 980N / piece, the hot strength of 450N / piece, the thermal stability (more than 6mm) of 93.4%, the drop strength (more than 13mm) of 97.6%, low ignition point and the burning rate of more than 92%. The metallurgical molded coal is suitable for bituminous coal and anthracite which have high ash fusion point, low sulphur content and the fixed carbon content of more than 70%, thus being applicable to a metallurgical furnace.

Description

technical field [0001] The invention relates to an industrial composite binder briquette, in particular to a metallurgical briquette made from humic acid-containing raw materials. Background technique [0002] According to the type of binder used, briquette is divided into inorganic binder briquette, organic binder briquette and composite binder briquette. The composite binder briquette combines the characteristics of inorganic binder briquette and organic binder briquette. It not only has the characteristics of high carbon content and high calorific value of organic binder briquette, but also has good water resistance of inorganic binder briquette. , High strength at high temperature. Composite binder briquette is the main direction of briquette technology development. At present, the development of composite binder briquette has achieved results, and more briquette binder formulations have been developed. However, there are problems such as lack of binder raw materials ...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L5/14C10L5/12
Inventor 刘仁生周振华
Owner SHANXI LUAN MINING GRP
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