SU407580A1 - INSTALLATION FOR SMOKING AND DRYING MATERIALS - Google Patents

Description

The invention relates to the cement industry and can be used in cement plants for grinding and simultaneously drying cement raw materials.

A known apparatus for grinding and drying materials, comprising a tube mill, to which, on the one hand, a pipeline for supplying drying material and grains is connected. In addition, the installation includes separators, a device for transporting grains from the separators to the mill, and a generator of the drying agent.

; In a known installation, from separators to a mill in a transport device moves, but is moist, along with which cold outside air moves. Air and grains enter the mill, while moisture is condensed in the grinding chamber, and the grains are moist, milling poorly, and smearing the chamber walls. As a result, the mill dramatically reduces productivity and is stopped to clean the chamber from the adhering layer.

In addition, the grit is wet, moving with cold air from the separator in the transport device, clogs it.

The purpose of the invention is to increase the plant capacity and the efficiency of the device for transporting grits.

This is achieved by the fact that the generator of the drying agent when pomoni; the intermediate pipeline and the fan are connected to the device for transporting the grains and, with the help of an additional pipeline, directly with the mill from the side of the loading of the grains into the chamber of the fritted grinding.

In order to maintain an optimal ratio of gas flow rates in the coarse and fine grinding chambers of the mill, an adjusting gate is installed in the additional pipeline that supplies the drying agent to the fine grinding chamber.

The drawing shows the proposed installation.

It contains a pipe mill 1st mill 1 with coarse 2 and fine 3 grinding located between the chambers and discharging the grinding product, driven by the forces of gravity. The discharge part of the mill is closed by a casing and is a discharge box 4 into which the material spills out of the grinding chambers through the discharge port 5. The receiving hopper 6 of the mill is hermetically connected with a diverter 7 to the dispenser 8, installed under the hopper 9 of the source material. Simultaneously received

the funnel 6 is connected to a device for transporting grains from the separator. From the side of the receiving hopper to the inside of the trunnion of the pipeline M-10 mill, there is a drying agent (hot gas) from the generator 11 of hot gases. On the opposite side of the mill there is a charging device 12 of grains. The lower part of the unloading box 4 is connected to the lower part of the elevator 13, the upper part of which is connected to the centrifugal circulation separator 14. The central discharge opening of the senator is connected to the conveyor 15 of the finished product, and the side opening to the transport device IS. . This air wiper is connected to the fan 17, the suction inlet of which is connected by an intermediate pipe 18 to the pipe supplying the drying agent 10, and the discharge pipe to the transport device of the grains. The fine grinding chamber 3 with the aid of an additional pipeline 19, which has a regular, 1 Diver 20, is connected to the pipeline 10 for supplying a drying agent to the mill. The upper part of the unloading box 4 with the help of the duct and the duct 21 is connected to the inlet of a centrifugal separator of the passage type 22, the outlet of which by the duct 23 is connected to the cyclone 24, and the latter, in turn, to the duct 25. The system is exhausted by a smoke exhauster 27. The product captured by the iB cyclone and the filter is fed by the leak 28 to the conveyor 15 of the finished product. The outlet of the grit chain grab. Blast-through separator 22 is connected to the transport device grit.

The raw material from the bunker 9 is fed to the receiving hopper 6 by means of the metering device 8 and the chute 6, and then into the coarse grinding chamber 2 of the rotating multi-chamber tube mill 1. The material crushed in a coarse grinding machine is unloaded through the windows of the 5 mill box 4, from which it is supplied by lift 13 to the centrifugal circulation separator 14. Separated to the centrifugal circulation separator, the prepared material enters the conveyor 15 of the finished product and then to the warehouse, and the grains - to the transnort device 16. From this device The crock feeds are fed to the charging device of the grit of the fine grinding chamber 3 mills. iKpynKa can also be fed to the coarse grinding chamber. From the fine grinding chamber, the product is discharged into the discharge box 4 through the windows 5 in the Mill housing in the same way as from the coarse grinding chamber and together with it enters the elevator 13 and the cycle is repeated. In order to dry the material during the grinding process, hot gases from the generator 11 are used, but it is also possible to use the heat from the exhaust gases of other heat exchangers. Hot gas from generator & feeds into chamber

coarse grinding 2 through conduit 10, and into the fine grinding chamber through conduit 19. The grains in device 16 are transported using hot gases supplied by a fan 17. Lastly, hot gas is sucked from the drying agent conduit 10 and injected into the cannula or a different type conveyor by which the grains from the separator are transported

in KBiMepy fine grinding.

The transported grains are dried. Hot gas flows through pipeline 19 and the device for transporting 16 grains to fine grinding. Maintaining the optimal speeds of the gas notes in the coarse and fine grinding chambers of the mill is carried out by the regulating gate 20. The removal of the spent sprayed hot gases from the chambers of the mill is carried out through

The top of the discharge box 4 through the duct 21 into the centrifugal pass separator 22. The grains caught in this separator are fed to the device 16 for further processing in the mill. Dust gases from the senator 22 are fed through the duct 23 to the first stage of dust cleaning in the cyclops 24, and then to the next cleaning stage through the duct 2: 5 into the filter 26. The captured conditioned product from the cyclone and filter

chute 28 comes PA finished product warehouse. Dust-free gases are emitted into the atmosphere by a smoke exhauster 27.

Prev Invention

Claims (2)

1. Installation for grinding and raw materials, mainly cement raw materials, including a tubal bed with coarse and fine grinding chambers to which, on the one hand, the supply line of the supply agent and the raw material loading device, separators, generator of the supply agent and the device for transporting the grains from the separators to the mill are connected, increasing the productivity of the plant and increasing the efficiency of the device for transporting grit, the generator of the essential agent is connected via an intermediate pipeline and a fan A device for transporting the grains and an additional pipeline directly with the mill from the side of the loading of the grains into the fine grinding chamber. 2. Installation under item 1, characterized in that, in order to maintain optimal The ratios of gas flow rates in the chambers of coarse and fine mills of the mill, in the additional pipeline that supplies the essential agent to KajMepy for fine grinding, a regulating gate is installed. % . s 4075SU /four / J. 23