CN1915527A - Ore dressing technique for asbestos integrated procedures of drying, crashing, tearing off asbestos, and classifying - Google Patents
Ore dressing technique for asbestos integrated procedures of drying, crashing, tearing off asbestos, and classifying Download PDFInfo
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- CN1915527A CN1915527A CN 200610086160 CN200610086160A CN1915527A CN 1915527 A CN1915527 A CN 1915527A CN 200610086160 CN200610086160 CN 200610086160 CN 200610086160 A CN200610086160 A CN 200610086160A CN 1915527 A CN1915527 A CN 1915527A
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Abstract
An asbestos ore dressing technology includes such steps as conveying the asbestos contained semi-finished ore into its warehouse, conveying it in heat-conducting oil type parching pot by the electromagnetic vibration feeder, preheating while partial dewatering, conveying it in breaking-separating machine, drying, breaking, tearing off asbestos, separating, feeding the asbestos fibers in a falling cylinder by hot air, cleaning b planar rotary vibration sieve, classifying, and packing.
Description
Technical field
The present invention is a kind of technology that is used for asbestos mining processing industry production aspect, belongs to the asbestos beneficiation method
Technical field.
Background technology
The process route of traditional segmental machining is all adopted in home and abroad asbestos ore dressing at present, that is: drying-fragmentation-take off cotton-sorting (suction cotton)-classification-process for purifying.Drying nest wherein, the domestic general air dries of adopting more, minority also has equipment such as the rotary kiln of employing or pneumatic conveying drying; That fragmentation has is just broken, in, in small, broken bits; Capital equipment is jaw crusher, impact breaker, hammer mill, gyratory crusher etc.; Take off cotton equipment cage crusher, vertical crusher or opener etc. are arranged; Sorting process adopts the plane gyratory screen to add equipment such as inhaling cotton system and elutriator more.The process route of old this part of technology is long, equipment is many, investment is big, production efficiency is low.All adopt traditional segmentation, fragmentation respectively, opener, sorting process as domestic Qinghai Mang Ya asbestos deposit, Qilian asbestos deposit, Sichuan Xin Kang asbestos deposit, Xinjiang and each asbestos deposit of Gansu etc.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of drying, fragmentation, take off cotton, sorting integrated asbestos ore-dressing technique, this method has been simplified the integrated artistic of asbestos ore dressings.Key technology is design, multifunctional equipment of manufacturing.
Technical scheme: integral process of the present invention relies on that the annulated column type is pulverized, separator with traditional drying, fragmentation, to take off four sections operations (equipment more than four kinds) such as cotton, sorting integrated, thereby simplified technology widely, equipment and capital expenditure have been reduced, energy efficient and cost have improved production efficiency and economic benefit greatly.
The cotton semi-finished product that contain from mine or primary election workshop section are transfused to the semi-finished product feed bin, evenly send it to the conduction oil frying pan by electro-vibrating feeder, carry out preheating and partial dehydration; The conduction oil frying pan places on the coal-fired fluidized bed furnace, and the low-temperature heat quantity of conduction oil below 200 ℃ provided by boiler; Semi-finished product after the preheating are processed to the pulverizing of annulated column type, separator by conveyor delivery; Simultaneously big calorimetric flue gas is imported main frame through dedusting by air-introduced machine in the hot-blast stove, semi-finished product at the main frame inner drying, pulverize, take off cotton, sorting; The asbestos fibre that sub-elects is also sent into falling cylinder by hot blast; The tail wind that contains aqueous vapor and dust is sent into dust pelletizing system; The asbestos fibre that contains impurity such as certain stone grain, dust is reduced to the purification of plane cycle vibratory sieve, hierarchy system obtains qualified product by conveyer belt input finished bin or packing machine, and the sandstone dust that purifies also comprises the piece cotton and the needle-like asbestos are sent by chute and conveyer belt; Eliminating does not contain cotton wastes stone through ore dressing means such as magnetic separation to get rid of chats by the main frame gape, and chats carries out secondary operations with the product that purifies by the short cotton system of conveyer belt input.
Concrete process is;
Long cotton system: (moisture content 〉=25%)
1). extract asbestos fibre: to the preheating of ore semi-finished product, the drying that contain asbestos fibre, pulverize, take off cotton, sorting operation at annulated column type pulverizer and give in the preheating frying pan on the thermal conductance hot oil boiler and handling,
2). classification: asbestos are pressed length grading with hexagonal reel or horizontal screen;
3). purify: the asbestos after the classification contain certain dust and impurity, with clearing machine, garden shaft screen and plane screen out dirt, except that impurity such as shakeouts;
4). the examination and test of products, packing: pack after the assay was approved with asbestos standard test sieve.
Short cotton system: (long stapled chats is dried, extracted to moisture content＜5%)
1). high intensity magnetic separation:, select horsestone, the country rock that does not most contain cotton with intensity magnetic separator according to the difference of ore and country rock magnetic;
2). pulverize, take off cotton, sorting: adopt the pulverizing of annulated column type, separator to process, integrated processing,
3). classification, purification: with hexagonal reel, horizontal screen asbestos are pressed length grading, the asbestos after the classification contain certain dust and impurity, screen out impurity such as dirt, desanding with clearing machine, garden shaft screen and plane;
4). the examination and test of products, packing: pack after the assay was approved with asbestos standard test sieve.
In the technological process, separately discharge rubble grain, medium sand and micro mist, be convenient to reclaim, fully utilize.
Like this, this technology only just can replace tens complete equipments in the old technology with a few collar column types pulverizing, separator, and its benefit is very tangible, and this technology has following characteristics.
A. annulated column type pulverizing, separator equipment are the cores of this technology;
B. asbestos fibre has been protected original fibre length pulverizing, take off sorting in time in process, has improved value of the product;
C. make full use of heat energy, the hot benefit of fluidized bed furnace, heat conducting oil boiler is very high, and flue gas all is used as hot blast and is made full use of;
D. adopt strong magnetic separator to handle chats, the grade of ore in the enrichment reduces treating capacity; Fully utilize metal, the rare metal of enrichment in the ore when possible;
E tailings, tail powder discharge respectively, also are innovations.Tailings is a magnesium silicate, is the good raw material of producing magnesium metal, magnesium salts, porous silicon; Contain the asbestos short fibre of a large amount of≤0.5mm in the tail powder, can directly do the insulating powder brush material, also can produce micron order or nanoscale heat preserving and insulating material (being used in combination) through super-fine processing with Binder Materials such as gypsum.This helps the comprehensive utilization of resource; Realize zero-emission in the whole production, help environmental protection.
Beneficial effect: this innovative technology is to be a blank in the domestic and international asbestos ore dressing industry, and is advanced in the world.
1, the pulverizing of annulated column type, the separator that adopt are the keys of this technology.This equipment complex the Mps Vertical Mill, the function of the equipment such as Peter (Petter-Mills) mill, Muscovite EM type coal pulverizer, medium-speed pulverizer, opener and winnowing machine of Suspension roller (thunder illiteracy) mill, roll-in mill, edge runner, Germany is the integrating dry, pulverize, take off novel annulated column type pulverizing, the separator of functions such as cotton, sorting of design innovation formula voluntarily, simplified technology greatly, minimizing equipment and capital expenditure, energy-conservation, synergy.
2, the comprehensive utilization energy: adopt high boiling type hot-blast stove, the heat exchanger of the thermal efficiency; Make full use of fume afterheat, give heat,, make the thermal efficiency reach higher level.
3, asbestos fibre is being pulverized, and takes off instant sorting in process, protects original fibre length, has improved value of the product.
4, adopt high magnetic separator, handle chats, the grade of enrichment secondary powder ore reduces treating capacity, improves the asbestos rate of recovery; Each mining area ore, each location ore have difference, and diverse ways can be arranged; Also possible some metal of enrichment, rare metal are so that recycle.
5,, also be an innovation to the separately discharging of tailings, tail powder; Tailings mainly is a magnesium silicate, is to produce magnesium metal, magnesium chloride and porous silicon (SiO
2) good raw material; The short fiber asbestos that contains a large amount of≤VI level in the tail powder can ultra-fine deep processing be produced micron order or nanoscale insulation, heat-barrier material (thermal insulation coatings); Zero-emission in the production process is implemented in the comprehensive utilization of the resource that is highly advantageous to like this, helps environmental protection.
Technology of the present invention has drying, pulverizes, takes off cotton, sorting asbestos and similar raw mineral materials be in the function of one; Not only can be used for the ore dressing of humid area, the also asbestos ore dressing of available arid area (not needing hot-air system, energy consumption, input still less); This technology, also can extend to other industry: as cement slurry grinding, chamotte powder grinding process; Power plant's coal-grinding technology; The grinding process of slag (grain slag); The drying of raw mineral materials such as kaolin (containing porcelain stone), quartz sand, hematite stone and levigate, be specially adapted to levigate, the deep processing of the raw mineral materials such as the materials such as clinker, quartz sand (silica), diamond spar, rutile, iron ore and slag of middle and high hardness, high whiteness, broad range of applicability.
In a word, the satisfactory enforcement of the various key technologies of this project, multiple opening one's minds not only has very big economic benefit, and resource is made full use of, and energy-conservation and Significance for Environment also is unprecedented.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.Wherein have: semi-finished product feed bin 1, conduction oil frying pan 2, coal-fired fluidized bed furnace 3, conveyer 4, air-introduced machine 5, the pulverizing of annulated column type, separator 6, fall cotton bucket 7, plane cycle vibratory sieve 8, chute 9, conveyer belt 10, conveyer belt 11, main frame gape 12.
The specific embodiment
Employing equipment: the fluidized bed furnace heat conducting oil boiler of heat supply, the pre-hot high efficiency of thermal recovery, its high-temperature flue gas as hot blast input annulated column type pulverize, separator carries out the ore drying, installs in one on the boiler, the continuous frying pan of low temperature conduction oil; Hot ore semi-finished product through annulated column formula pulverizer just can fragmentation, take off cotton.Simultaneously heat is breathed one's last dry asbestos on one side, the fiber that will dissociate on one side blows out pulverizer, enters falling cylinder, the equipment that the classification of the asbestos of back, purification, check, packing etc. adopt, and the old and new's technology is similar.The pulverizing of annulated column type, pulverizer are discharged a large amount of chats and are told a large amount of tailings again through strong magnetic separator, do not reach grade through check and then do the barren rock eliminating; Sand, short cotton and the dust of selecting that cotton chats gets off with long cotton system purification that contain sent small-sized annulated column formula pulverizer to, extract short cotton after, the classification of asbestos, purification, check, packing are with traditional equipment.
Concrete operating process is:
Come to the mine or the cotton semi-finished product that contain of primary election workshop section are transfused to semi-finished product feed bin 1, evenly send it to conduction oil frying pan 2, carry out preheating and partial dehydration by electro-vibrating feeder; The conduction oil frying pan places on the coal-fired fluidized bed furnace 3, and the low-temperature heat quantity of conduction oil below 200 ℃ provided by boiler; Semi-finished product after the preheating are transported to the pulverizing of annulated column type, separator 6 by conveyer 4, process; Simultaneously in the hot-blast stove big calorimetric flue gas through dedusting by air-introduced machine 5 input main frames, semi-finished product at the main frame inner drying, pulverize, take off cotton, sorting; The asbestos fibre that sub-elects is also sent into falling cylinder 7 by hot blast; The tail wind that contains aqueous vapor and dust is sent into dust pelletizing system; The asbestos fibre that contains impurity such as certain stone grain, dust is reduced to purification, hierarchy system such as plane cycle vibratory sieve 8 and is obtained qualified product by conveyer belt 10 input finished bin or packing machines.The sandstone dust that purifies also comprises the piece cotton and the needle-like asbestos are sent by chute 9 and conveyer belt 11; Eliminating does not contain cotton wastes stone through ore dressing means such as magnetic separation to get rid of chats by main frame gape 12, and chats carries out secondary operations with the product that purifies by the short cotton system of conveyer belt 11 inputs.
To the cotton system and process of the length of feldspar cotton fiber be:
1). extract asbestos fibre: to the preheating of ore semi-finished product, the drying that contain asbestos fibre, pulverize, take off cotton, sorting operation at annulated column type pulverizer and give preheating and partial dehydration in the preheating frying pan on the thermal conductance hot oil boiler,
2). classification: asbestos are pressed length grading with hexagonal reel or horizontal screen;
3). purify: the asbestos after the classification contain certain dust and impurity, with clearing machine, garden shaft screen and plane screen out dirt, except that impurity such as shakeouts;
4). the examination and test of products, packing: pack after the assay was approved with asbestos standard test sieve;
The process of short asbestos fibre is:
1). high intensity magnetic separation: according to the difference of ore and country rock magnetic, select horsestone, the country rock that does not most contain cotton with intensity magnetic separator,
2). pulverize, take off cotton, sorting: adopt the pulverizing of annulated column type, separator to process, integrated processing,
3). classification, purification: with hexagonal reel, horizontal screen asbestos are pressed length grading, the asbestos after the classification contain certain dust and impurity, screen out impurity such as dirt, desanding with clearing machine, garden shaft screen and plane,
4). the examination and test of products, packing: pack after the assay was approved with asbestos standard test sieve.
As asbestos mining area semi-finished product water content＜25%, then can cut the stirring-type dryer, (the many air dries in arid or semiarid zone) more can cut hot-air system as water content ∠ 5%, and technology is more simplified, and investment, energy consumption is lower, and efficient is higher.
1, the asbestos of producing 30000 tons per year select factory's preliminary budget: (Qilian asbestos deposit)
The mine provides the semi-finished product raw material, contains cotton rate (1-6 level) 12%, water content 30%, and as calculated: ore dressing year is handled 380,000 tons of semi-finished product raw materials; Select 3,000 two of the pulverizing of annulated column type, separator Φ for use, 1,800 one of Φ, two covers such as supporting hot-blast stove.Equipment gross investment: 8,000,000 yuan, add that civil engineering, power supply, transportation always drop into 1,500 ten thousand yuan; 900 yuan/ton of production costs (wherein semi-finished product are 300 yuan/ton, 120 yuan of coal consumptions, and 90 yuan of power consumptions are packed 60 yuan, and 130 yuan of wages keep in repair 30 yuan, and transportation is 80 yuan in the mining area, shop burden, 55 yuan, other 35 yuan etc.), 180 yuan of enterprise administration expenses, 1550 yuan/ton of average prices, 150 yuan of tax revenues, 9,600,000 yuan of gross profits were recoverable whole input less than 2 years.Contrast: existing Qilian asbestos deposit is transported to the county town with semi-finished product and selects factory, and cold solarization back choosing is cotton, and light transports 800 yuan at moisture half-finished freight charges stand per ton, and as if 2000 yuan/ton of prices, then enterprise only obtains meagre profit.
2, the clinker grinding mill in the replacement cement industry
With Φ 3 * 9m ball mill, installed capacity 1000KW, 40 tons of hourly outputs, power consumption 25 degree/tons, (not considering auxiliary drive institute power consumption) steel consumes average 750g/t, with global (post) flour mill, same output, fineness, energy consumption are 17 degree/tons, steel consumption 170g/t, contrast global (post) grinding machine: small investment, little, the dry sound of floor space are low, grog need not cool off, directly into mill, circulating air can forward that coal powder injection utilizes again in the rotary kiln to, reduces coal consumption; Operating maintenance is convenient; Therefore energy-conservation (coal), joint steel should be promoted in cement industry energetically.As be used in and produce 1000000 tons cement plant per year, annual economize on electricity 8,000,000 degree, 580 tons of joint steel, 10,000 tons in coal, 1,070 ten thousand yuan of total prices, the annual production cost of saving can be bought nearly 10 grinding machine.
3, the production of plaster of Paris
Be similar to Peter mill (Petter-Mills) technology of Germany, can make dihydrate gypsum dehydration, grinding integrated, promptly in another series of loops ball-type grinding machine of our exploitation, feed high-temperature hot air (500-600 ℃), the limit grinding, the limit dehydration makes dihydrate gypsum be converted into half water plaster of Paris.This process efficiency height, energy consumption is low, is a kind of advanced technologies in the current gypsum deep processing.But the requirement to equipment and material is very high, domesticly still locates the pilot scale stage.Patent equipment of the present invention will play a significant role in the production of plaster of Paris.
Claims (3)
1. a drying, fragmentation, take off cotton, sorting integrated asbestos ore-dressing technique, it is characterized in that its operating process is: the cotton semi-finished product that contain from mine or primary election workshop section are transfused to semi-finished product feed bin (1), evenly send it to conduction oil frying pan (2) by electro-vibrating feeder, carry out preheating and partial dehydration; The conduction oil frying pan places on the coal-fired fluidized bed furnace (3), and the low-temperature heat quantity of conduction oil below 200 ℃ provided by boiler; Semi-finished product after the preheating are transported to by conveyer (4) that the annulated column type is pulverized, separator (6) is processed; Simultaneously in the hot-blast stove big calorimetric flue gas through dedusting by air-introduced machine (5) input main frame, semi-finished product at the main frame inner drying, pulverize, take off cotton, sorting; The asbestos fibre that sub-elects is also sent into falling cylinder by hot blast; The tail wind that contains aqueous vapor and dust is sent into dust pelletizing system; The asbestos fibre that contains impurity such as certain stone grain, dust is reduced to plane cycle vibratory sieve (8) purification, hierarchy system obtains qualified product by conveyer belt (10) input finished bin or packing machine, and the sandstone dust that purifies also comprises the piece cotton and the needle-like asbestos are sent by chute (9) and conveyer belt (11); Eliminating does not contain cotton wastes stone through ore dressing means such as magnetic separation to get rid of chats by main frame gape (12), and chats carries out secondary operations with the product that purifies by the short cotton system of conveyer belt (11) input.
2. a kind of drying according to claim 1, fragmentation, take off cotton, sorting integrated asbestos ore-dressing technique, it is characterized in that being the cotton system and process of the length of feldspar cotton fiber:
1). extract asbestos fibre: to the preheating of ore semi-finished product, the drying that contain asbestos fibre, pulverize, take off cotton, sorting operation at annulated column type pulverizer and give preheating and partial dehydration in the preheating frying pan on the thermal conductance hot oil boiler,
2). classification: asbestos are pressed length grading with hexagonal reel or horizontal screen;
3). purify: the asbestos after the classification contain certain dust and impurity, with clearing machine, garden shaft screen and plane screen out dirt, except that impurity such as shakeouts;
4). the examination and test of products, packing: pack after the assay was approved with asbestos standard test sieve;
3. a kind of drying according to claim 1, fragmentation, take off cotton, sorting integrated asbestos ore-dressing technique, it is characterized in that the process of short asbestos fibre is:
1). high intensity magnetic separation: according to the difference of ore and country rock magnetic, select horsestone, the country rock that does not most contain cotton with intensity magnetic separator,
2). pulverize, take off cotton, sorting: adopt the pulverizing of annulated column type, separator to process, integrated processing,
3). classification, purification: with hexagonal reel, horizontal screen asbestos are pressed length grading, the asbestos after the classification contain certain dust and impurity, screen out impurity such as dirt, desanding with clearing machine, garden shaft screen and plane,
4). the examination and test of products, packing: pack after the assay was approved with asbestos standard test sieve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610086160 CN1915527A (en) | 2006-09-06 | 2006-09-06 | Ore dressing technique for asbestos integrated procedures of drying, crashing, tearing off asbestos, and classifying |
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| CN 200610086160 CN1915527A (en) | 2006-09-06 | 2006-09-06 | Ore dressing technique for asbestos integrated procedures of drying, crashing, tearing off asbestos, and classifying |
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| CN1915527A true CN1915527A (en) | 2007-02-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698835A (en) * | 2012-06-11 | 2012-10-03 | 江苏省一夫新材料科技有限公司 | Drying and sorting integrated crusher and process |
| CN103433138A (en) * | 2013-07-29 | 2013-12-11 | 十堰源禹工贸有限公司 | Breaking and separation integrated comprehensive recovery system of chrysotile tailings |
| CN104148171A (en) * | 2014-07-17 | 2014-11-19 | 陈乐� | Multifunctional full-automatic walking vibrating screen |
| CN104479788A (en) * | 2014-12-19 | 2015-04-01 | 中国矿业大学 | Lignite column-type pulsing airflow drying and dry separation synergetic upgrading device and method |
| WO2022252388A1 (en) * | 2021-05-31 | 2022-12-08 | 华中科技大学 | Horizontal interlayer fluidized-bed biomass micron fuel crusher and method of using same |
-
2006
- 2006-09-06 CN CN 200610086160 patent/CN1915527A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698835A (en) * | 2012-06-11 | 2012-10-03 | 江苏省一夫新材料科技有限公司 | Drying and sorting integrated crusher and process |
| CN103433138A (en) * | 2013-07-29 | 2013-12-11 | 十堰源禹工贸有限公司 | Breaking and separation integrated comprehensive recovery system of chrysotile tailings |
| CN104148171A (en) * | 2014-07-17 | 2014-11-19 | 陈乐� | Multifunctional full-automatic walking vibrating screen |
| CN104479788A (en) * | 2014-12-19 | 2015-04-01 | 中国矿业大学 | Lignite column-type pulsing airflow drying and dry separation synergetic upgrading device and method |
| CN104479788B (en) * | 2014-12-19 | 2016-08-10 | 中国矿业大学 | A kind of brown coal pillar pulse pneumatic is dried dry separation and works in coordination with upgrading device and method |
| WO2022252388A1 (en) * | 2021-05-31 | 2022-12-08 | 华中科技大学 | Horizontal interlayer fluidized-bed biomass micron fuel crusher and method of using same |
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Application publication date: 20070221 |