CN203269799U - Cement production device - Google Patents

Abstract

The utility model discloses a cement production device, which relates to the technical field of cement production and manufacture. The cement production device comprises a ball mill, a mill hoist and a pneumatic conveyor, wherein the pneumatic conveyor is arranged between the mill hoist and a finished product storeroom; the mill hoist is a pneumatic hoist; an air conveying oblique groove is connected with the mill tail of the ball mill and the pneumatic hoist; a material charging port is formed in a groove body of the air conveying oblique groove; a material bin for containing superfine slag powder is arranged above the ball mill, and is communicated with the material charging port through a material feeding scale, a reamer conveyor and a blanking pipeline. Compared with the prior art, the cement production device has the beneficial effects that the blanking position of the superfine slag powder is changed to be behind the mill, and thus independent milling can be achieved; the milled superfine slag powder is mixed into clinker fine powder, thereby improving the milling efficiency, increasing the output per machine hour of the mill, and lowering the milling energy consumption; the pneumatic device is adopted for conveying and mixing, and the mixing effect is better; moreover, the working procedure can be simplified, the production efficiency can be improved, and the production cost can be lowered.

Description

Cement manufacture plant

Technical field

The utility model relates to manufacture of cement manufacturing technology field, especially a kind of cement manufacture plant that mixes mixing material.

Background technology

In cement production process, for improving cement performance, regulating the mineral material that cement mark is added in cement and be called cement additive.And slag is a kind of important cement additive commonly used in manufacture of cement, mixes slag and both can take full advantage of the industrial solid castoff that granulation blast furnace etc. produces in cement, can reduce again the consumption of cement clinker, thereby reduce production costs.The equipment of tradition preparation mixed material cement is generally that slag, cement clinker, Wingdale and gypsum are added to intergrinding in ball mill by a certain percentage together, by changing grog and the proportioning of slag and the grinding fineness of cement, produces the cement of different labels.But the grindability of slag is very poor, and during intergrinding, often grog is ground carefullyyer, and slag particle is still thicker, and larger on the impact of mill condition, the volume of slag in cement is restricted.In order to address the above problem, existing method is with all mixing materials grinding respectively, and then with the kind cement of the synthetic different intensity grades of chamotte powder.In the technical process of mixing material difference grinding, technical process to slag milling comprises: high thin and tall product tuber grinder one-level open circuit flow process, general milling machine, the closed circuit flow process of high-efficient powder concentrator one-level, the closed circuit flow process of vertical mill one-level, roll squeezer and ball mill combination grinding flow process etc.; The common ground of these flow processs is slag powders to be worn into high fine powder (general designation: slag powders).Although each enterprise's basis manufacturing condition is separately taked different respective grinding process forms, but a kind of method of the mixing that currently available products is shaped is to mix according to a certain percentage with the cement mixing machine, this method need to increase a series of equipment of cement mixing machine, investment is large, equipment is complicated, the workload of safeguarding increases, and has strengthened maintenance of the equipment personnel's working strength; And need to increase mixed processes together between powder-grinding process and conveying operation, and extended the production used time, be unfavorable for enhancing productivity.Dividing the another kind of synthetic method after grinding is that slag is worn into specific surface area greater than 400 m ²The slag powders of/kg, the high fine powder of slag powders and other mixing material is entered the abrasive dust mill more together, because the blended material fineness is thinner, larger on the impact of mill condition from bistrique feeding charging, material is in grinding process, along with the prolongation of grinding time, material specific surface area increases gradually, its specific surface energy also increases, thereby subparticle is assembled mutually, the trend of conglomeration also strengthens gradually.After after a while, in mill, serious bag ball, bag section phenomenon appear in the II storehouse.In this state, even ask when extending grinding again, also be difficult to the product grinding is got thinner, sometimes even make the sign granularity chap of product.And the slag powders addition content is generally in 5 ± 1% left and right, and addition content is smaller, and is also more single to producing cement type.Simultaneously, mill output obviously reduces, grinding energy is multiplied, mill efficiency reduces.This phenomenon but often occurs in fine-grinding and superfine pulverizing when common grinding and not obvious, is also one of grinding production problem that must conscientiously solve.In addition, most domestic cement delivery system all adopts mechanical chapelet to carry, material the cement mixing machine mix or in mill levigate reach control index after from grinding the discharging of tail skewed slot, mixed cement delivers into reserves little storehouses through chapelet, final cement enters single storehouse pump system, send into the storehouse by storehouse pump and transport pipe, the storehouse pump mainly is comprised of the pump housing, admission passage, PLC Controlling System, feed valve, vent valve, fluidisation valve and transfer valve etc.; This chapelet delivery system exists stopping property poor, the shortcomings such as cement dust emits everywhere and chapelet maintenance labour intensity is high, maintenance cost is high, more and more stricter aspect environmental protection in following cement production enterprise evolution, the poor e Foerderanlage of stopping property will not be suitable for manufacture of cement.

The utility model content

The purpose of this utility model be to provide a kind of simple and easy, efficient, mix after mix the cement manufacture plant of blended material, this equipment can solve the problem that the equipment that existing manufacture of cement exists is many, production cost is high, efficient is low and be unfavorable for environment protection.

In order to address the above problem, the technical solution adopted in the utility model is: this cement manufacture plant comprises ball mill, mill tail fly-ash separator, go out to grind lift, and be arranged at the described Pneumatic conveyer that goes out to grind between lift and stockyard, described to go out to grind lift be penumatic elevator, is connected with air conveyer flume between the mill tail of described ball mill and described penumatic elevator, offers charging opening on the cell body of described air conveyer flume; Described ball mill is equipped with the feed bin of placing slag micropowder, and described feed bin is connected with described charging opening by feeding scale, reamer transfer roller and blanking pipe.

In the technical scheme of above-mentioned cement manufacture plant, technical scheme can also be more specifically: described mill tail fly-ash separator is connected by returning grey tremie pipe with described charging opening, and described blanking pipe is connected with described charging opening by described time grey tremie pipe.

Owing to having adopted technique scheme, the utility model compared with prior art has following beneficial effect:

1, by the blanking position with slag micropowder change be located at mill after, can realize grinding respectively, slag micropowder is mixed in the grog fine powder after mill, thereby reduce bag ball, bag section phenomenon that mixer mill occurs, to improve mill efficiency, increase mill hourly output, reduce grinding energy;

2, the transfer passage that is linked to be of air conveyer flume, penumatic elevator and Pneumatic conveyer except basic conveying function, the high-pressure blast that produces in also can installing in course of conveying fully mixes the powder of various blended materials by each, because its mixing process is that the blended material powder mixes in the suspension process, therefore mixed effect is compared to the better effects if of cement mixing machine; Mix when carrying, can simplify working process, enhance productivity, reduce the equipment investment amount, be conducive to reduce energy consumption, thereby reduce production costs.

Description of drawings

Fig. 1 is the schematic diagram of the utility model embodiment cement manufacture plant.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing embodiment:

The utility model adopts equipment shown in Figure 1 to prepare mixed material cement, and this equipment mainly comprises the feed bin that cement clinker, gypsum, Wingdale are housed respectively, feed weigher, ball mill 1, air conveyer flume 2, penumatic elevator 3, reserves little storehouses 4, storehouse pump 5, transport pipe 5-1, reamer transfer roller 8, blanking pipe 9, fly-ash separator 10 returns grey tremie pipe 11; Wherein, air conveyer flume 2 is arranged on ball mill 1 mill tail place, and air conveyer flume 2, penumatic elevator 3, reserves little storehouses 4, storehouse pump 5 and transport pipe 5-1 are communicated with the transfer passage that forms material successively, and material is delivered in stockyard 6 through this transfer passage; Be provided with charging opening on air conveyer flume 2, ball mill 1 is equipped with the feed bin 7 of placing slag micropowder, feed bin 7 is connected with charging opening by feeding scale, reamer transfer roller 8 and blanking pipe 9 successively, and 9 grey tremie pipes 11 that return by fly-ash separator 10 of blanking pipe are connected with the charging opening of air conveyer flume 2.

during work, with cement clinker, after gypsum and the Wingdale weight ratio weigh batching by setting, put into together ball mill 1 powder mix and wear into fine powder, when this fine powder enters the air conveyer flume 2 that is placed in the mill tail, grind in advance the slag micropowder that obtains from the discharge port of feed bin 7 through feeding scale, reamer transfer roller 8, blanking pipe 9 and time grey tremie pipe 11, send in air conveyer flume 2 from charging opening and converge mutually with the grog fine powder, converging material enters in penumatic elevator 3, carry out elementary mixing under the jet-stream wind effect of material in penumatic elevator 3, the mixed powder that forms is delivered to reserves little storehouses 4, then the feed valve of storehouse pump 5 and vent valve are opened under the control of PLC microcomputerized controller, mixed powders in the little storehouse of reserves 4 begin charging in the pump housing, when the weight of the mixed powder in the pump housing reaches set(ting)value, feed valve and vent valve autoshutdown, delay time after 8 seconds, open fluidisation valve and transfer valve, pressurized air is entered in the pump housing by intake ducting, feeding begins, mixed powder is blowed to stockyard 6 through transport pipe 5-1, mixed powder is suspension in pipeline under the effect of high pressure wind-force, this state enters stockyard 6 after powder can fully be mixed again, during lower than minimum set(ting)value, the PLC microcomputerized controller sends signal when transfer pressure in pump, and transfer valve, fluidisation valve are closed, and conveying is completed.

Claims (2)

1. cement manufacture plant, comprise ball mill, mill tail fly-ash separator, go out to grind lift, and be arranged at the described Pneumatic conveyer that goes out to grind between lift and stockyard, it is characterized in that: described to go out to grind lift be penumatic elevator, is connected with air conveyer flume between the mill tail of described ball mill and described penumatic elevator, offers charging opening on the cell body of described air conveyer flume; Described ball mill is equipped with the feed bin of placing slag micropowder, and described feed bin is connected with described charging opening by feeding scale, reamer transfer roller and blanking pipe.

2. cement manufacture plant according to claim 1 is characterized in that: described mill tail fly-ash separator is connected by returning grey tremie pipe with described charging opening, and described blanking pipe is connected with described charging opening by described time grey tremie pipe.