CN1204685A - Binder for waterproof stoving-free formed coal - Google Patents
Binder for waterproof stoving-free formed coal Download PDFInfo
- Publication number
- CN1204685A CN1204685A CN 97112522 CN97112522A CN1204685A CN 1204685 A CN1204685 A CN 1204685A CN 97112522 CN97112522 CN 97112522 CN 97112522 A CN97112522 A CN 97112522A CN 1204685 A CN1204685 A CN 1204685A
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- coal
- water
- phosphoric acid
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Abstract
A water-proof bakefree binder for briquette of powdered anthracite or bituminous coal is prepared from solidifying agent (magnesite) (22-52.6%), hardening agent (halogen) (17.8-35.5%), thermal reinforcing agent (wollasto nite, bentonite, or mirabilite) (11.6-52.2%), water-proofing agent (powdered coal ash, phosphorate, or phosphoric acid) (3.8-16.6%), water is used as solvent and blender. The briquette made with it features no need of baking, low cost, high strength and excellent water-proof nature.
Description
The invention belongs to briquette molding processing and use binding agent, be specially adapted to the moulding bonding of gas-making type coal.
The moulding of raw coal powder is the important channel that burning utilizes the powdery coal, and the existing several different methods of its shaped coal processing does not wherein need the binding agent except that some are hot-forming, all need add making moulded coal have certain intensity and water-proof binding agent.The binding agent of selecting for use both at home and abroad has multiple, as coal tar, and pitch, papermaking wastewater, animal blood (blood meal), biochemical sludge, cement, Calcium Carbide Ash, or the like.But these schemes or on production cost, or on briquette strength, water tolerance, there is deficiency in various degree.Lower as publication number CN-1104244A " a kind of water-proof high-intensity coal binder " hot strength, burning easily causes the stove that collapses when using, and contained brown coal or coking coal are unsuitable for gas making and use (Ammonia Production) simultaneously, and can reduce cold strength.
The purpose of this invention is to provide the practical moulded coal that makes and need not dry the binding agent that promptly has higher cold strength and excellent water-repellancy.
Binding agent provided by the present invention also contains water-resisting agent except that containing solidifying agent (solidifying agent), stiffening agent (activator) and hot toughener (toughener and hot-setter).The weight percent of each component is as follows:
Solidifying agent: 22～52.6% (for hard coal, breezes), 27.3～35.5% (for bituminous coal);
Stiffening agent: 17.8～31.6% (for hard coal, breezes), 27.3～35.5% (for bituminous coal);
Hot toughener: 11.6～52.2% (for hard coal, breezes), 12.7～22.7% (for bituminous coal);
Water-resisting agent: 4.2～7.8% (for hard coal, breezes), 3.8～16.6% (for bituminous coal).
Wherein, solidifying agent is a magnesia, and promptly magnesite is light-burned forms, and main component is MgO; Stiffening agent is the halogen sheet, and main component is MgCl
2Hot toughener is that (Gan Zitu, refractory mortar, main component are SiO for silicon ash (or grain slag) and wilkinite for hard coal
2, Al
2O
3), also can add water glass, be that (main component is Na for silicon ash (or grain slag) and saltcake for bituminous coal
2SO
4); Water-resisting agent is flyash and phosphoric acid salt (or phosphoric acid).
The weight percent that hot toughener self is formed is: for hard coal, and silicon ash (or grain slag) 6.4～20%, wilkinite 51.1～90.9%, water glass 0～42.5%; For bituminous coal, silicon ash (or grain slag) 4.8～20%, saltcake 80～95.2%.
The weight percent that water-resisting agent self is formed is: flyash 75～81.8%, phosphoric acid salt (or phosphoric acid) 18.2～25%.
For water dissolution halogen sheet and phosphoric acid salt (or phosphoric acid) and the dilution water glass of bituminous coal with raw coal gross weight 8～12%; Hard coal halogen sheet and phosphoric acid salt (phosphoric acid) are dissolved in 2/3 the water of (8～12) % of raw coal gross weight, water glass is diluted in 1/3 the water of (8～12) % of raw coal gross weight.
Solidifying agent and stiffening agent and water generation chemical reaction generate solid-state Mg (OH) Cl precipitation, form the cold strength of moulded coal; Add hot toughener and improved the hot strength of moulded coal, add the immersion intensity that water-resisting agent has then obviously improved moulded coal.Particularly improved the water resistance of the shaped coal of bituminous coal that is difficult to waterproof.
In the above composition, silicon ash (or grain slag), water glass, wilkinite and flyash can be cast out wherein 1～3, to be used for cold strength and the less demanding occasion of water-repellancy.
The advantage of this binding agent is to exempt from oven dry, and cost is low, the cold strength height, and water resistance is good.According to the test of Beijing Coal Chemistry Inst., Coal Sciences General Inst. of Ministry of Coal Industry, the briquette strength and the water tolerance of producing with this binding agent are as follows:
The Jincheng, Shanxi hard coal: cold strength＞100Kg/ ball,
Hot strength 31Kg/ ball,
2 hours intensity 85Kg/ balls soak;
Hegang, Heilungkiang raw coal: cold strength＞600N/
Hot strength 360～380N/
Soaking the several months in water does not loose.
The moulded coal coal briquette of appended material object for making of this binding agent and Jincheng, Shanxi hard coal powder, 1.5 meters apart from ground, to enforce on the cement flooring, these coal briquettes can keep prototype constant.
Embodiment 1: the binding agent that is used for hard coal or breeze is composed as follows:
Wherein: hot toughener:
Water-resisting agent:
Embodiment 2: the binding agent that is used for bituminous coal is composed as follows:
Wherein: hot toughener:
Claims (1)
1, a kind of binder for waterproof stoving-free formed coal contains solidifying agent, stiffening agent and hot toughener, it is characterized in that:
(1) also contains water-resisting agent;
(2) each weight percentages of components is:
Solidifying agent: 22%～52.6% (being used for hard coal), 33.4～47.6% (being used for bituminous coal),
Stiffening agent: 17.8～31.6% (being used for hard coal), 27.3～35.5% (being used for bituminous coal),
Hot toughener: 11.6%～52.2% (being used for hard coal), 12.7～22.7% (are used for cigarette
Coal),
Water-resisting agent: 4.2～7.8% (being used for hard coal), 3.8～16.6% (being used for bituminous coal);
(3) solidifying agent is magnesia (MgO); Stiffening agent is halogen sheet (MgCl
2); Hot toughener is silicon ash (or grain slag) and wilkinite (Gan Zitu, refractory mortar, main component SiO for hard coal
2, Al
2O
3), also can add water glass, be silicon ash (or grain slag) and saltcake (Na for bituminous coal
2SO
4); Water-resisting agent is flyash and phosphoric acid salt (or phosphoric acid);
(4) weight percent of hot toughener composition is: for hard coal, and silicon ash (or grain slag) 6.4～20%, wilkinite 51.1～90.9%, water glass 0～42.5%; For bituminous coal, silicon ash (or grain slag) 4.8～20%, saltcake 80～95.2%;
(5) weight percent of water-resisting agent composition is: flyash 75～81.1%, phosphoric acid salt (or phosphoric acid) 18.2～25%;
(6) for water dissolution halogen sheet and phosphoric acid salt (or phosphoric acid) and the dilution water glass of bituminous coal with raw coal gross weight 8～12%; Hard coal halogen sheet and phosphoric acid salt (phosphoric acid) are dissolved in 2/3 the water of (8～12) % of raw coal gross weight, water glass is diluted in 1/3 the water of (8～12) % of raw coal gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97112522A CN1062299C (en) | 1997-07-09 | 1997-07-09 | Binder for waterproof stoving-free formed coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97112522A CN1062299C (en) | 1997-07-09 | 1997-07-09 | Binder for waterproof stoving-free formed coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1204685A true CN1204685A (en) | 1999-01-13 |
| CN1062299C CN1062299C (en) | 2001-02-21 |
Family
ID=5172320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97112522A Expired - Fee Related CN1062299C (en) | 1997-07-09 | 1997-07-09 | Binder for waterproof stoving-free formed coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1062299C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215096A (en) * | 2013-04-23 | 2013-07-24 | 徐祥兵 | Low-smoke-intensity and high-sulfur fixation adhesion agent |
| CN105296045A (en) * | 2015-11-23 | 2016-02-03 | 广西金壮锦节能技术有限公司 | High viscosity briquette waterproof composite binder |
| CN112646630A (en) * | 2021-01-06 | 2021-04-13 | 刘明锐 | Coal slime solidifying and upgrading agent |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070219A (en) * | 1992-07-27 | 1993-03-24 | 青岛胜利锅炉厂 | Method for making briquette |
| CN1032971C (en) * | 1993-11-13 | 1996-10-09 | 孙天民 | Air-entrained high efficiency briquette and preparation method thereof |
| CN1033756C (en) * | 1994-10-14 | 1997-01-08 | 祝朝晖 | Water-proof high-intensity coal binder |
-
1997
- 1997-07-09 CN CN97112522A patent/CN1062299C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215096A (en) * | 2013-04-23 | 2013-07-24 | 徐祥兵 | Low-smoke-intensity and high-sulfur fixation adhesion agent |
| CN105296045A (en) * | 2015-11-23 | 2016-02-03 | 广西金壮锦节能技术有限公司 | High viscosity briquette waterproof composite binder |
| CN112646630A (en) * | 2021-01-06 | 2021-04-13 | 刘明锐 | Coal slime solidifying and upgrading agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1062299C (en) | 2001-02-21 |
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