CN100404654C

CN100404654C - Industrial honey comb briquette

Info

Publication number: CN100404654C
Application number: CNB2006100756599A
Authority: CN
Inventors: 苗冠强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-18
Filing date: 2006-04-18
Publication date: 2008-07-23
Anticipated expiration: 2026-04-18
Also published as: CN1831096A

Abstract

The present invention relates to an industrial briquette which is mainly composed of powder coal, light burning powder and magnesium oxide. The proportion of principal raw material is 100 portions of powder coal, 3 to 10 portions of light burning powder and 1 to 8 portions of magnesium sulplate. The optimized proportion is 100 portions of bituminous coal, 5 portions of light burning powder and 3 portions of magnesium sulplate to most bituminous coal. The optimized proportion is 100 portions of anthracite coal, 5 portions of light burning powder, 5 portions of magnesium sulplate and 1 to 2 portions of bituminous coal or light coal to most anthracite coal. The briquette can adopts a cold briquetting method for manufacturing, single ball cold strength is as high as 1000 to 1200 N, calorific intensity is as high as 400 to 500 N, and ash fusing point is 130 DEG C. The present invention can assure no breaking, no dispersing and no collapsing in the processes of storage, transportation, furnace entering and burning, the present invention has the advantages of good burning stage in the furnace, sufficient burning and low flue dust content and has certain sulfur solidifying effect, and the present invention can be mainly suitable for various pottery kilns, cement kiln and industrial kilns.

Description

Industrial shaping coal

Technical field

The present invention relates to a kind of industrial shaping coal, mainly can be used for Industrial Stoves such as various pottery kilns, cement kiln.

Background technology

The moulded coal of industrial kiln is made by coal powder formation, adopts roller briquetting machine or screw extruder that fine coal is pressed, and the hole with granule interior between the pulverized coal particle reduces, and then the reunion moulding, forms the moulded coal with certain volume and shape.For bituminous coal and hard coal, because the cohesiveness of himself is not high, need to add certain binding agent in the raw material, with the ultimate compression strength after assurance moulding and the moulding, avoid in accumulating, meet water, go into fragmentation in stove and the combustion processes, form powder or produce dust, cause stove internal combustion state deteriorating and increase dust concentration in the flue gas.Binding agent at present commonly used comprises inorganicss such as organism such as coal tar, pitch, spent pulping liquor and lime, clay, water glass, these binding agents have adapted to the requirement of coal powder formation in certain occasion, and obtain certain application, but still there is the not really high defective of intensity and ash fusion point in it, when Industrial Stoves such as the pottery kiln that is used for the higher briquette strength of some needs, cement kilns, these moulded coals can broken phenomenon occur in a large number in combustion processes, can not satisfy service requirements well.

Summary of the invention

For overcoming the above-mentioned defective of prior art, the invention provides a kind of industrial shaping coal, the ultimate compression strength height of this industrial shaping coal, the ash fusion point height is difficult for fragmentation, helps improving the state of combustion of kiln and reduces soot emissions.

The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of industrial shaping coal, mainly to form by fine coal, light burnt powder (being light calcined magnesia) and sal epsom, and the proportioning of its main raw material (by weight) is 100 parts in a fine coal, light burnt powder 3-10 part, sal epsom 1-8 part;

For bituminous coal, preferred proportioning is 100 parts in a bituminous coal, light burnt powder 4-6 part, sal epsom 2-4 part;

For hard coal, preferred proportioning is: 100 parts in hard coal, and light burnt powder 4-6 part, sal epsom 4-6 part also can be added bituminous coal 1-3 part, in addition to improve its cohesiveness.

This moulded coal can adopt the mode of existing coldmoulding to carry out processing, under the prerequisite that does not change production technique, obtain high strength and high ash melting point, its single ball cold strength is up to 1000-1200N, hot strength is up to 400-500N, ash fusion point is 130 ℃, soaks in the water and does not loose in 48 hours, can recover original intensity substantially after cool the solarization, guaranteed in accumulating thus, gone in stove and the combustion processes not break, do not loose, do not collapse, stove internal combustion state is good, sufficient combustion, and smoke content is low.Light burnt powder wherein also has captured sulfur result in addition, helps reducing the concentration of sulfur dioxide in flue gas.

Embodiment

Embodiment one: 100 parts in bituminous coal, 10 parts of light burnt powders, 1 part in sal epsom, (total water-content generally can be controlled in 10-18% to add appropriate water, mix down together), adopting pressure is the roller briquetting machine moulding of 25MPa, and cool solarization of normal temperature was effective fixed in 48 hours, fixedly laggardly work air-dry dryly, form briquette prod.

Embodiment two: 100 parts in bituminous coal, and 5 parts of light burnt powders, 3 parts in sal epsom, the water that adds appropriateness mixes, and production method is with embodiment one, and this proportioning all is a preferred version for most bituminous coal.

Embodiment three: 100 parts in bituminous coal, and 3 parts of light burnt powders, 8 parts in sal epsom, the water that adds appropriateness mixes, and production method is with embodiment one.

Embodiment four: 100 parts in hard coal, and 5 parts of light burnt powders, 5 parts in sal epsom, bituminous coal 1-2 part, the water that adds appropriateness mixes, and production method is with embodiment one, and this proportioning all is a preferred version for most hard coals.

Embodiment five: 100 parts of mixed coals, and 5 parts of light burnt powders, 4 parts in sal epsom, the water that adds appropriateness mixes, and production method is with embodiment one.

In the various embodiments described above, coal dust should be broken to particle usually and be not more than 3mm.Meeting under the situation of processing requirement, also can adopt other granularities.

When adopting hard coal, on the basis of above-mentioned basic proportioning (fine coal, light burnt powder and sal epsom), add an amount of bituminous coal usually, to strengthen its cohesiveness, addition is generally 1-3 part, when addition during, it can be charged to the total amount of fine coal, as mixing coal greater than 3 parts.

In the present invention, generally can adopt bituminous coal or hard coal to make the fine coal raw material, also can adopt the coal of other kinds or the mixing coal that multiple coal forms, coal or mixing coal that bituminous coal during the foregoing description is equal or hard coal all can adopt other kinds substitute.Used light burnt powder and sal epsom can adopt existing finished product industrial raw material, and the effective content (in MgO) of light burnt powder should not be lower than 85% usually, preferably is not less than 90%, and the effective content of sal epsom is (with MgSO ₄7H ₂The O meter) should not be lower than 93%, preferably be not less than 95%.

According to actual needs, can also add an amount of sweetening agent and/or ignition dope etc.

Each technological process that briquette production of the present invention relates to (for example select materials, pulverizing, batch mixing, moulding, drying etc.) all can adopt the technology of prior art or other any suitable.

Claims

1. an industrial shaping coal is characterized in that being made up of fine coal, light burnt powder and sal epsom, and proportioning is: 100 parts in fine coal, light burnt powder 3-10 part, sal epsom 1-8 part.

2. industrial shaping coal as claimed in claim 1 is characterized in that described fine coal is bituminous coal, and proportioning is: 100 parts in bituminous coal, light burnt powder 4-6 part, sal epsom 2-4 part.

3. industrial shaping coal as claimed in claim 2 is characterized in that proportioning is: 100 parts in bituminous coal, 5 parts of light burnt powders, 3 parts in sal epsom.

4. industrial shaping coal as claimed in claim 1 is characterized in that described fine coal is hard coal, and proportioning is: 100 parts in hard coal, light burnt powder 4-6 part, sal epsom 4-6 part.

5. industrial shaping coal as claimed in claim 4 is characterized in that described fine coal is hard coal and bituminous coal, and proportioning is: 100 parts in hard coal, light burnt powder 4-6 part, sal epsom 4-6 part, bituminous coal 1-3 part.

6. industrial shaping coal as claimed in claim 5 is characterized in that proportioning is: 100 parts in hard coal, 5 parts of light burnt powders, 5 parts in sal epsom, bituminous coal 1-2 part.

7. as claim 1,2,3,4,5 or 6 described industrial shaping coals, it is characterized in that the effective content of described light burnt powder is not less than 85%, the effective content of described sal epsom is not less than 93%.

8. industrial shaping coal as claimed in claim 7 is characterized in that the effective content of described light burnt powder is not less than 90%, and the effective content of described sal epsom is not less than 95%, and the particle of described fine coal is not more than 3mm.

9. as claim 1,2,3,4,5 or 6 described industrial shaping coals, it is characterized in that the total water-content in its raw material is 10-18 part.