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Three, process flow 1, limestone crushing, screening system

Limestone broken suggest setting in limestone mine, and rational utilization of elevation construction. Mining down by the limestone loader into limestone crusher, via B1800 x by silo 15000mm heavy plate feeder feeding PCF - thousand six hundred single segment hammer crusher are broken, breakage of lime homework after stele inscriptions were widely used 2YK2160 circle vibrating screen belt conveyor into upper screening, vibrating screen hole 20 millimeter, second screen hole 5 millimeter; Among them sieve shoesmaking (< 5 ㎜) mainly for stripping soil and impurities, cannot use; Sieve in material (5 ~ 20 ㎜) alone for lime stone heaps, production systems use; Sieve feeding (20 to 40 ㎜) separate heaps, for calcination lime production systems use.

After the screening of massive lime by automobile transport to production

2, lime stone production systems:

Sieve in material (5 ~ 20 ㎜) after car transported to a factory, the factory built-in raw material storage, the heap tent hoist into hello, hello bin bottom a bunker, via measuring speed belt scales of limestone evenly into SY - 165 grinding mill, the material is conveying equipment into classifier, after FengXuan after qualified material is hoist into finished products warehouse store inside, unqualified material return mill continue grinding. This system has a dust collector, will produce produces in the process of waste handling.

Fenmo after finished product can according to the market's needs, adopt the bulk or after packing factory.

3, calcining lime production systems:

This project has adopted a set of advanced perpendicular type preheater - rotary kiln - perpendicular type cooler process line, every two sets of a group, limestone calcination system consists of a ф 8.5 x 8.5 m perpendicular type preheater, ф 3.6 * 54m rotary kiln and 3.6 * 3.6 * 7m perpendicular type cooler composition, production 400t/d, heat consumption 5250kJ/t.

By automobile transport admittance limestone sieve feeding (20 to 40 ㎜), the hoist into raw, after speed belt scales measurement, the hoist belt-conveyors into preheater top bunker, limestone by preheater top slip by blanking silo tube import preheater this body, at the same time by rotary kiln of incoming material is high temperature fume preheated to 900 ℃ above, make limestone produce partial decomposition, again by twelve hydraulic push rod ordinal push the rotary kiln tail, the rotary kiln high temperature firing again after discharged into the cooler inside, through fan blowing wind cooling, the materials will ℃ below 100 cooling and discharge, cooler in cooler blowing air as a secondary air into the rotary kiln burnt.

Vertical preheater's main function is to deliver of limestone materials to the upper body, at the same time the preheater pellets by rotary kiln within discharged exhaust (~ 1150 ℃), in the preheater inside the material evenly to ~ $900 ℃ preheated by hydraulic push rod, and then push the rotary kiln within the calcination, such calcination process not only make limestone in the stove burning time shortens greatly, also can obtain activity degree of lime. Vertical preheater structure except electronic-controlled outside, mainly by four major part, one is the upper material feeding system, mainly including the upper house, next feed tube, next makings way and structure can guarantee in the body to preheater feeding realized fully closed, so that the outside of cold air cannot enter into preheater inside, and material feeding can use stick valve to achieve continuous or intermittently feeding. 2 it is preheater subject, it is preheated to 900 ℃ ensure material about the most important part, it is by the preheater barrel, unloading arch, hanging device and refractory lining etc parts. This part of the structure are mostly metal components, some materials according to need to choose the heat-resisting steel, heat-resistant steels can in 1000 ~ 11 ℃ high temperature. In addition, the refractory lining structure design is novel, can ensure material in preheater evenly in preheated and achieve the preheated temperature. Three is hydraulic device, mainly including the push rod, framework and connecting parts, such as, push rod is by heat resistant steel castings, able to bear high temperature, under the help control and hydraulic system, eight hydraulic push rod to achieve automatic control program sequence push material. The fourth is frame, it mainly includes by pole, struts, main effect is carrying preheater of upper structure.

Material feeding the small stele inscriptions were widely used ℃ 1000 ~ 11 lime evenly preheat the preheater exhaust to 900 ℃ around. Exhaust, through the preheater upper 8 vent pools in - up into the preheater waste gas treatment system. Has partly decomposition of lime stele inscriptions were widely used on the preheater hydraulic push rod push into feeding room, charging room mainly includes sneak tube, charging room subject, charging hotel-used etc, its main effect is preheated materials imported after will participate in rotary kiln calcination. Pellets of lime after kiln head unloader device into vertical cooling machine for cooling, enter perpendicular type cooler lime in fan drum wind below, make the lime temperature from about 1150 rapidly cooling to 100 ℃ below.

The activity of lime pellets by cooler after discharged by chain conveyor into ring fights hammer crusher, broken to less than 5 ㎜ materials via hoist into lime storehouse.

Rotary kiln, which are produced by burning high temperature fume in preheater inside with limestone on heat, temperature drop to 280 ℃ below, then after heat exchanger in hot, smoke temperature further reduced to 150 ℃ below, and then into the bag filter, dedusting after fan discharged into the chimney, preheater exhaust part for light calcium carbonate made use of, and the rest of the atmosphere, into the gas with dust concentration of less than 30mg/m3,

The project adopts the heat exchanger can not only reduce exhaust inlet temperature, the water can after heating supply light calcium carbonate preparation system of grey emulsification ash machine use.

To ensure the normal operation of production, the system Settings bypass flue, bypass flue of do with is in rotary kiln ignition and heat exchangers, precipitator, high temperature fan is at fault, as backup facilities, emissions produced by burning high temperature flue gas kiln.

4, calcium hydroxide production system

Lime in the electronic measurement storehouse of lime, and belt scales measurement by flowmeter metering of water gets together into implement, the digestion of digestion of material into secondary gets digestion, thus further digester ores have digested into Ca (OH) 2 powder, scraping by buried trigger and cloak type hoist sent to separator, to comply with the requirements, the particle size FengXuan separators of fine powder, by fine powder separator take to trigger the finished product storage buried scrape. The granularity separation by separator unqualified powder into the mill and fine grinding returned after separator circulation separation. By lime digestion resulting from the vast amounts of heat and water vapor by upper air reposado device by dusting off after discharge. Pre digester upside sets closed wind device, guarantee system of steam and external isolation, thus forming system negative pressure in the operation, ensure operation environment clean.

5, coating with calcium carbonate production system

Calcination produce lime kiln inside, CaO CaO reaction with water produce lime-milk Ca (OH) 2, grey milk by ministry of grey corrects the pulp out mouth eduction, filter pulp by vibration sieve out residue, coarse pulp part miscellaneous coarse pulp pool, coarse inflows by refining equipment (breast pump, screw liquid separator, intermediate tank) blended input seminal plasma pool; Refining process of coarse slag by spiral slag discharge machine into slurry tank, add water mixing for production, ash breast milk recycled coarse pulp pool, ash into row away or recovery make other products; Seminal plasma by pump into the carbonization towers and from the kiln by purification system (spray tower, water tower, packed tower) after purification of carbon dioxide (CO2 into the carbonization reaction of carbon dioxide gas by air compressor conveying), reaction to the finish namely after generating calcium carbonate CaCO3 (pulpous state) by carbonization tower into reservoir pulp pool; Then the pump into high cans, by solid-liquid separation equipment dehydrator to undertake dehydration, filter out the mother liquor into traps, precipitation water return clear water recycled, serum back into the store pulp pool; The centrifugal after dehydration and calcium carbonate CaCO3 filter cake by pulverizer, disk storage, feeding machine into the dryer, after drying of CaCO3 via sieve city.there are optional remove impurities, measuring, packaging namely for light calcium carbonate.

最佳答案推荐：Third, the process 1, limestone crushing, screening systemBreaking recommendations set in the limestone-limestone mining, and construction of rational use of altitude difference. Mining loaders into the limestone-limestone Crusher Hopper, B1800x15000mm heavy plate type feeder feeding PCF-1616 single hammer crusher for crushing jobs, broken belt of limestone into 2YK2160 circular vibrating screen for screening, vibrating screen sieve hole 20 mm of the upper, tier 5 mm sieve hole which screen blanking (< 5 mm) mainly for removal of the soil and impurities, you cannot use; sieve (5~20 mm) separate piles, for use by limestone flour production system; return (20~40 mm) separate piles, for use by the calcination of lime production systems.After the screening of massive lime transported by car to the production area2, limestone flour production systems:Sieve (5~20 mm) after a car transported to the plant, built in the factory raw materials stored in heap shed, hoist into feeding bunker, end of feeding bunker set timing belt scales, the measurement of limestone evenly into the SY-1650 mill, grinding materials after transportation equipment into the separator, after wind selected feed stored in the warehouse of finished products eligible materials hoists, substandard materials returned continued grinding mill. This system is equipped with a dust collector, producing emissions produced during processing.After grinding products to fit your marketing needs, shipped after using bulk or packed.3, calcined lime production systems:This project uses a set of advanced vertical-rotary kiln heater---vertical cooling technology for production lines, each two sets as a set, calcination of limestone system consists of a vertical type ф 8.5x8.5m preheater, ф 3.6x54m 3.6x3.6x7m vertical and rotary kiln type cooler, and yield 400T/d, heat 5250kJ/t.By car delivery admission of limestone sieve Shang material (20~40 mm), by upgrade machine into raw materials library, after adjustable speed belt scales measurement Hou, by upgrade machine belt machine into preheating device top Department material warehouse, limestone by preheating device top Department material warehouse by Xia material slipped tube import preheating device ontology within, while by rotary kiln incoming of high temperature flue gas will material preheating to 900 ° c above, makes limestone occurs part decomposition, again by 12 a hydraulic pusher turn push into rotary kiln tail, by rotary kiln high temperature calcined Hou again unloading into cooling device within, through wind machine blow into of cold air cooling, will material cooling to 100 ° c following discharges cooling device within, cooling device blow into of air as II times air into rotary kiln participation combustion.-Shaft preheater is mainly limestone of upper sent materials sent within the body of preheater, released after using calcined in rotary kiln exhaust gas (~1150) and, in the preheater with evenly preheated material to ~900 ° c, and then by the hydraulic pusher pushes calcined in rotary kiln, calcination process not only makes the calcination of limestone in the kiln time greatly reduced, as well as access to the high activity of lime. Vertical structure of the preheater except electronic control, a mainly consists of four major components, one is upper feeding system, including the top hopper, feeding tube, material and structure ensures that when feeding in the body of preheater completely sealed, so the cold air from the outside world will not go into to the preheater and feeding valve for continuous or discontinuous feeding with rods. Second, heater, it is to ensure that the most important part of the material warms up to around 900 ° c, it is made of the preheater cylinder, Arch, suspension equipment and fire bricks lining parts. Most of the parts of the structure is metal components, part of the material according to the need to use a heat-resistant steel, heat-resistant steel can work under high temperature 1000~1100℃. In addition, the fire bricks lining structure design, can guarantee that the material evenly preheated in the preheater and achieve the preheating temperature. Third, hydraulic lifter device, including putting, frames, and link parts, pusher is made of heat-resisting steel castings, can withstand the high temperatures, origin electric control and hydraulic system, 8 hydraulic pusher can realize automatic feeding in program order. Four is the framework, which mainly includes the from column, beam, is mainly used to bearing heater of superstructures.Feeding of Kokura limestone kiln exhaust gas, as 1000~1100℃ evenly preheated to around 900 ° c. Emissions through heater 8 vents at the top of pool-entering the kiln exhaust gas treatment system. Has been partially dissolved limestone preheaters hydraulic pusher push into the feeding room, feeding mainly includes the chute, feeding, feeding dish, its main role is to preheat the materials imported participation calcined in rotary kiln. After kiln unloading equipment after the calcination of lime into the vertical type cooling machine cooling, vertical type to enter under cooler fan of lime in blast, from about 1150 lime temperature rapidly cooled to 100 degrees centigrade.Activity after the calcination of lime cooler after unloading into ring hammer Crusher bucket conveyors, broken material hoists to less than 5 mm into the lime silo.High temperature flue gas from burning kiln, hot-swap with the limestone in the preheater, temperatures dropped to 280 ° c, heat via heat exchangers, reducing further flue gas temperature to 150 ° c below, and then into the bag, the dust removal after the fan into the chimney, part of the kiln exhaust gas for the use of precipitated calcium carbonate is made, with the remainder into the atmosphere, dust concentration of gases into less than 30mg/M3,This project uses the heat exchanger can not only reduce the kiln exhaust gas temperatures, water heating supply can also be precipitated calcium carbonate lime emulsion preparation system of lime.In order to ensure normal operation of the production, the system sets the bypass flues, bypassing flue was in the ignition and heat exchangers, rotary kiln dust remover, such as high temperature fan fails, as an alternate facility, hot flue gas from burning emissions rotary kilns.4 calcium oxide, hydrogen production systemLime electronic belt scale of measurement in the lime silo after measuring, and meter metering of water into the digestion, digested material into the secondary for further digestion digestive, this lime is digested into Ca (OH) 2 powder from buried scraper conveyor, bucket elevator to separators, air separation to separator, particle size to meet the requirements of fine powder, fine separator accept to buried scraper conveyor to the storage of finished products warehouse. Isolation and separation of fine granularity is not eligible to enter the mill, and returns the separator after the ground loop isolation. Digestion of quicklime and a lot of heat and steam generated by the aging of upper wind after the road dust emissions. For upper digestive has closed device, assurance system of steam and external insulation, thus forming the negative pressure in the system operation to ensure clean operation environment. 后面的翻译不了 

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