CN1082098A

CN1082098A - A kind of briquet replacing coke is smelted the coal briquette of usefulness

Info

Publication number: CN1082098A
Application number: CN 92109820
Authority: CN
Inventors: 田明海
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-10
Filing date: 1992-08-10
Publication date: 1994-02-16

Abstract

The present invention relates to a kind of briquet replacing coke and smelt the coal briquette of usefulness, its proportioning is that anthracite or hard coal are 65-70%, coke powder 22-30%, ground dolomite 2-3%, tackiness agent 2-4%, fully stirs and is mixed the compacting balling-up.Its main application is a briquet replacing coke when smelting, and reduces cost, and increases economic efficiency.

Description

A kind of briquet replacing coke is smelted the coal briquette of usefulness

The present invention relates to a kind of fuel of smelting usefulness, especially a kind of briquet replacing coke is smelted the coal briquette of usefulness.

Metallurgy industry is a main fuel to smelt coke all aspect smelting at present, certainly use coke a lot of as smelting the fuel advantage, but its cost is higher, particularly local small-sized smeltery uses coke cost more to seem expensive when changing iron, the technology of coking is comparatively complicated in addition, in process of coking in burning part of coal the detrimental impurity, also burnt fixed carbon in a big chunk coal, increase ash, reduced calorific value, directly influenced metallurgic product cost and quality, because the energy of China's coking coal is very not abundant, the coal blending resource is also very difficult, and the quality of coal blending directly influence is produced burnt quality, how to adopt an effective measure, overcome coal some weakness in smelting through artificial, develop advantage, it can directly be used in metallurgical furnace, thereby reach the purpose of briquet replacing coke.

The purpose of this invention is to provide the coal briquette that a kind of energy briquet replacing coke uses in smelting.

The present invention is achieved like this: the proportioning of coal briquette is: anthracite or hard coal 65-70%, coke powder 22-30%, ground dolomite 2-3%, tackiness agent 2-4%.

Tackiness agent is by tar 50-60%, and pitch 40-50% forms.

The making method of coal briquette is: coal dust, coke powder, ground dolomite are mixed, tackiness agent is warmed between the 65-85 ℃ of degree, pour into and carry out artificial or mechanical stirring in the raw material, it is mixed, be poured into then in the roll squeezer hopper, make its roll extrusion balling-up, particle size diameter is between the 60-70 millimeter, can be standby after the balling-up, the time spent also can be mixed use with coke.

The present invention compared with prior art has following advantage:

1, reduces cost, greatly about about 30%;

2, calorific value height improves economical efficiency;

3, make simply, be easy to promote, be particularly suitable for local small-sized smeltery and use.

Embodiment: to produce 100 kilograms of coal briquette radixes for falling:

At first anthracite or 69 kilograms in hard coal, 25 kilograms of coke powders, ground dolomite fully are mixed for 2.5 kilograms, with 3.5 kilograms in tackiness agent is that tar is 50-60%, pitch is 40-50%(by weight 100%), be warmed between the 65-85 ℃ of degree, pour into and carry out artificial or mechanical stirring in the material that the top mixes, it is mixed, it is put in the roll squeezer hopper then, make its roll extrusion balling-up, granularity can be standby after the balling-up between ∮ 60-70 millimeter; Also can mix use by a certain percentage with coke, anthracite or smokelessly require composition: fixed carbon is between 82-85%, and ash＜17% contains full sulphur and is lower than below 0.7%, and granularity is between 5-0 centimetre; Coke powder must not require impurity such as containing dirt, and granularity is between 10-0 centimetre; Ground dolomite requires to contain magnesium oxide more than 80%, and granularity is between the 80-100 order; Tar in the tackiness agent must not be moisture, and sulfur-bearing is lower than 0.8%, and pitch in the tackiness agent is not wanted hard, and sulfur-bearing is lower than below 0.8%.

Claims

1, a kind of briquet replacing coke is smelted the coal briquette of usefulness, and it is characterized in that: the proportioning of coal briquette is: anthracite or hard coal 65-70%, coke powder 22-30% removes stone flour 2-3% in vain, tackiness agent 2-4% (all by weight 100%).

2, according to the described coal briquette of claim 1, it is characterized in that: tackiness agent is: by tar 50-60%, pitch 40-50% forms.