CN101544478A - Production technology and production equipment for activated slag micro-powder - Google Patents
Production technology and production equipment for activated slag micro-powder Download PDFInfo
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- CN101544478A CN101544478A CN200810050572A CN200810050572A CN101544478A CN 101544478 A CN101544478 A CN 101544478A CN 200810050572 A CN200810050572 A CN 200810050572A CN 200810050572 A CN200810050572 A CN 200810050572A CN 101544478 A CN101544478 A CN 101544478A
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- slag
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Abstract
The invention discloses slag processing, in particular production technology and production equipment for activated slag micro-powder. The main technology comprises that: slag before the grinding passes through a mesh screen with meshes of between 8 and 12mm, raw materials are about 95 percent of slag, about 5 percent of plaster, and 0.05 to 0.1 percent of activating agent, the three chemical substances are weighed into the same open-circuit ball mill according to the proportion, the gap between a partition panel and a discharge grate plate of internal accessories of the open-circuit ball mill is between 1.0 and 2.0mm, a micro-grinding body ball forging is also adopted, the diameter of the micro-grinding body ball forging is between 6 and 25mm, an end face with ultra-small spherical diameter is a semi-circular special steel ball and steel forging, and a finished product of the activated slag micro-powder is obtained after the full grinding. Under the condition of not doping fly ash and limestone, the specific surface area of the activated slag micro-powder is within the range of between 450 and 550m<2>/kg, the power consumption is controlled to be between 50 and 60kwh/t and is reduced by 50 percent compared with the power consumption for producing the activated slag micro-powder with the same specific surface area at home and abroad, and the yield is improved by 90 percent or so.
Description
Technical field
The present invention relates to slag processing, more particularly, it is a kind of activated slag micro-powder production technique and equipment.
Background technology
Slag is the industrial waste of discharging in the iron manufacturing process.According to statistics, only national industrial solid wastes generation in 2004 is more than 13 hundred million tons, and the melting waste slag of these outdoor storages is stored up appropriation of land, pollutes soil poisoning, water body and atmosphere, have a strong impact on ecotope, cause obviously or the potential financial loss and the wasting of resources.Estimate that according to the industry department expert financial loss of storing up with melting waste slag per ton according to 15 yuan of calculating, causes financial loss to reach 20,000,000,000 yuan every year.So innoxious, the recycling treatment of melting waste slag is the focus that China and even countries in the world are attached great importance to, also be that we advance one of centre point of recycling economy.
Because the facility investment that utilizes Vertical Mill production slag micropowder is than higher, the slag micropowder that the slag micropowder granulometric composition is produced not as ball mill is reasonable, and is active on the low side; Therefore, domestic and international most enterprises still utilize the open circuit ball mill to produce slag micropowder, under the situation of not fly ash, Wingdale, and breeze specific surface area 450m
2During/kg the left and right sides, power consumption reaches about 100kwh/t.Because the manufacturing cost height of slag micropowder, flyash or the Wingdale about 8% mixes in the manufacturing enterprise of domestic majority in the process of producing slag micropowder, so as to increasing mill output, reduce production costs; Saying that accurately this product is not pure slag micropowder, is a kind of mixing material, does not also meet the slag micropowder national standard.Because activity index is very low, 28d can only reach about 75%; Producing cement, concrete or cement products can only utilize about 5%～20%; This situation, slag potential activity is not only fully played and is utilized, and the range of application of industrial residue and utilization ratio all have been subjected to certain restriction and influence.This situation does not only make full use of slag potential activity performance, but also has limited the extensive application of industrial residue.
Summary of the invention
Purpose of the present invention provides a kind of activated slag micro-powder production technique and equipment, uses open circuit ball mill grinding and produces activated slag micro-powder, does not contain flyash, Wingdale; Only mix gypsum, activator, slag micropowder obtains activation by machinery and chemical action in the process of grinding, and the activity index 7d of activated slag micro-powder can reach about 100%.Specific surface area reaches 450m
2/ kg～550m
2During the scope of/kg, mill output improves 80% than the grinding machine of domestic and international similarity condition, and quality reaches or greater than the slag micropowder S105 of country grade standard.
Under the situation of not mixing flyash, Wingdale, when guaranteeing than same grinding machine raising output 80% both at home and abroad, the specific surface area of raising slag micropowder, the activity index 7d of slag micropowder just can reach about 100%.
Purpose of the present invention is achieved by following technical proposals.
Activated slag micro-powder of the present invention, main component are slag 94-95%, gypsum 5%, activator 0.05%～0.1%.
Its weight ratio of slag main chemical compositions is:
SiO
2——31.0～39.23 AL
2O
3——8.96～15.0 Fe
2O
3_____1.5～2.87
CaO——35.0～44.67 MgO——4.47～10.0
Its weight ratio of gypsum main chemical compositions is:
LOSS——13.01 SiO
2____7.66 AL
2O
3____2.3 Fe
2O
3____1.09
CaO——33.83 MgO——0.92 SO
3____39.84
Activator 0.05%～0.1%, main component are trolamine, diethanolamine
Activated slag micro-powder specific surface area 450m
2/ kg～550m
2/ kg.
Activated slag micro-powder manufacturing process of the present invention is:
1,------------------------computer metering---feeding machine---open circuit enters ball mill to the slag bank to tramp iron separator to (screen cloth) mesh screen to the slag lift to fly-ash separator to horizontal drying machine to lift to slag;
2,---------------rotary conveyor---feeding machine---open circuit enters ball mill to the computer metering scale to the gypsum bank to the gypsum lift to pulverizer to gypsum;
3,---electronics volume pump---feeding machine---open circuit enters ball mill to activator.
Three kinds of materials promptly get activated slag micro-powder of the present invention entering same open circuit ball mill through after fully grinding.
The used equipment of the present invention is the open circuit ball mill, adopts special device interior accessory, and the slit of bin isolation board, discharging grate plate has only 1.0～2.0mm.Also adopted unique miniature grinding element ball to forge, its diameter is the special little special-shaped semi-circular forging of φ 6mm～φ 25mm sphere diameter.
The present invention compared with prior art beneficial effect is: (1) utilizes the open circuit ball mill equipment under the situation of not mixing flyash, Wingdale, activated slag micro-powder specific surface area 450m
2/ kg～550m
2In the scope of/kg, power consumption is controlled at 50～60kwh/t, reduces by 50%, improves output about 90% than domestic and international production slag micropowder power consumption; (2) activated slag micro-powder 7d activity index reaches more than 100%, and slag micropowder 7d activity index can only reach 55～75% both at home and abroad; (3) activated slag micro-powder mixes cement about 70%, can produce 32.5～42.5 grades of slag cement, reaches national cement new-standard; And the slag micropowder of producing both at home and abroad can only mix cement 15～30%, surpasses this scope, just reduces the original intensity of cement; (4) be widely used,, and can satisfy the needs of key state projects such as airport, harbour, power station, bridge as cement mill, grinding station, cement products, construction wall; (5) visible the present invention has lower production cost, increases profits tax, and save energy is protected farmland, the positively effect of preserving the ecological environment.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
In the drawings: slag 1, lift 2, horizontal drying machine 3, fly-ash separator 4, slag lift 5, screen cloth (mesh screen) 6, tramp iron separator 7, slag bank 8, computer metering 9, gypsum 10, pulverizer 11, gypsum lift 12, gypsum bank 13, computer metering scale 14, rotary conveyor 15, feeding machine 16, open circuit ball mill 17, activator 18, electronics volume pump 19, activated slag micro-powder 20.
Below in conjunction with accompanying drawing production technique of the present invention and equipment are done further to say in detail description.
The industrial waste of discharging in the iron manufacturing process is a slag 1, by handling equipment lift 2, slag 1 is delivered to horizontal drying machine 3 dries, the slag moisture requirement is controlled in 0.1～0.5%, the dust of dryer afterbody enters oven dry fly-ash separator 4, the dust of collecting is got back to ore deposit quarrel lift 5, slag after the oven dry is through the screen cloth or the mesh screen 6 in 8～12mm gap, purpose is to prevent that big fast material from entering grinding machine, pass through tramp iron separator 7 deironing again, (iron does not have activity and equipment and grinding element is produced wearing and tearing, stop up the seam of combing easily, so will remove the trace iron that contains in the slag), the slag that falls with deironing is a raw material, delivers to slag storage vault 8, raw material slag in the slag bank 8 through computer metering scale 14 according to 95% ratio transfer roller to feeding machine 16, in the material mouth enters the ball mill 20 of opening a way;
So just finished from slag and entered open circuit ball mill whole process.
Its main chemical compositions of described activator is trolamine 30%, diethanolamine 35%, plays both grinding aids, increases the active function of slag micropowder again.The grinding aid that is different from domestic and international use because grinding aid can only increase output, is the specific surface area that can not improve slag micropowder, can not improve the active of slag micropowder
The slit of open circuit ball mill bin isolation board, discharging grate plate has only 1.0～2.0mm.Also adopted unique miniature grinding element ball to forge, its diameter is φ 6mm～φ 25mm, and the special little special-shaped end face of sphere diameter is semi-circular forging.
Utilize the open circuit ball mill to produce activated slag micro-powder through fully grinding, under the situation of not mixing flyash, Wingdale, activated slag micro-powder specific surface area 450m
2/ kg～550m
2In the scope of/kg, power consumption is controlled at 50～60kwh/t, than slag micropowder power consumption reduction by 50%, the raising output about 90% of the same specific surface area of domestic and international production.Activated slag micro-powder is mainly used in cement, concrete, cement products, the construction wall aspect of iron and steel, building material industry and satisfies requirement of engineering such as airport, harbour, power station, bridge.
Claims (6)
1, a kind of activated slag micro-powder: the material composition weight ratio that it is characterized in that activated slag micro-powder is:
Slag 94-95%, gypsum 5%, activator 0.05%～0.1%.
2, activated slag micro-powder according to claim 1 is characterized in that utilizing the production of open circuit ball mill, does not mix flyash, Wingdale, activated slag micro-powder specific surface area 450m
2/ kg～550m
2/ kg, power consumption 50kwh/t～60kwh/t.
3, activated slag micro-powder according to claim 1 is characterized in that: the chemical ingredients of activator is trolamine 30%, diethanolamine 35%.
4, a kind of production technique of activated slag micro-powder is characterized in that:
(1)------------------rotary conveyor---feeding machine---enters the open circuit ball mill to the computer metering scale to the slag bank to screen cloth to dryer to slag in deironing-slag lift;
(2)---------------rotary conveyor---feeding machine---enters the open circuit ball mill to the computer metering scale to the gypsum bank to the gypsum lift to gypsum in pulverizing;
(3)---electronics volume pump---feeding machine---enters the open circuit ball mill to activator;
Slag, gypsum, three kinds of materials of activator after fully grinding, get the activated slag micro-powder finished product in same open circuit ball mill.
5, the production technique of a kind of activated slag micro-powder according to claim 3, it is characterized in that: the open circuit ball mill, the device interior accessory, the slit of bin isolation board, discharging grate plate is at 1.0mm～2.0mm, also adopt miniature grinding element ball to forge, its diameter is φ 6mm～φ 25mm, and the special little end face of sphere diameter is semi-circular special-shaped forging.
6, the production technique of a kind of activated slag micro-powder according to claim 3 is characterized in that: going into the preceding slag of mill will be by the mesh screen or the screen cloth in 8～12mm gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810050572A CN101544478A (en) | 2008-03-28 | 2008-03-28 | Production technology and production equipment for activated slag micro-powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810050572A CN101544478A (en) | 2008-03-28 | 2008-03-28 | Production technology and production equipment for activated slag micro-powder |
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|---|---|
| CN101544478A true CN101544478A (en) | 2009-09-30 |
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| CN200810050572A Pending CN101544478A (en) | 2008-03-28 | 2008-03-28 | Production technology and production equipment for activated slag micro-powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030319A (en) * | 2012-12-31 | 2013-04-10 | 厦门市易亨利工贸有限公司 | Preparation method of superfine slag powder admixture |
| CN109437630A (en) * | 2018-11-08 | 2019-03-08 | 江苏融达新材料股份有限公司 | A method of high-quality slag powders are produced based on desulfurized gypsum |
| CN116474928A (en) * | 2023-06-25 | 2023-07-25 | 中才邦业(杭州)智能技术有限公司 | Cement mill energy consumption optimization method and system |
-
2008
- 2008-03-28 CN CN200810050572A patent/CN101544478A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030319A (en) * | 2012-12-31 | 2013-04-10 | 厦门市易亨利工贸有限公司 | Preparation method of superfine slag powder admixture |
| CN109437630A (en) * | 2018-11-08 | 2019-03-08 | 江苏融达新材料股份有限公司 | A method of high-quality slag powders are produced based on desulfurized gypsum |
| CN116474928A (en) * | 2023-06-25 | 2023-07-25 | 中才邦业(杭州)智能技术有限公司 | Cement mill energy consumption optimization method and system |
| CN116474928B (en) * | 2023-06-25 | 2023-09-26 | 中才邦业(杭州)智能技术有限公司 | Cement mill energy consumption optimization method and system |
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Open date: 20090930 |