SU1357667A2 - Flow line for preparing and feeding metallurgical raw material - Google Patents

Abstract

The invention relates to ferrous metallurgy and can be used in sinter production. The goal is to increase the reliability of the line, improving the quality of the mixture, reducing energy consumption and improving working conditions. The flow line for the preparation and supply of metallurgical raw materials is made in the form of two combined lines. One of them is designed for the preparation and delivery of a primary mixture of sludge. It consists of a filter press dewatering sludge 1, a lime dust container 2 with a discharge metering device 3, a two-shaft screw mixer 4, a discharge conveyor 5, a hopper for holding the mixture 6. The second line contains a lime screening bunker 7, crushed lime 8, a bunker 9 granulated slag, granite slag 10, slag supply conveyor 11, grinding department of lime-burning production 12, lime supply conveyor and limestone 13, assembly conveyor 14 and ready-made drum mixer 15. Line To prepare the primary mixture of sludge, it is additionally equipped with a hopper with a metering device installed after the mixer and in front of an assembly conveyor. 1 il. (O (L SO SD about: Gi - NJ 75 P

Description

The invention relates to black megalurgy, can be used in sinter production, and is an improvement of the invention according to the author. St. No. 943507.

The purpose of the invention is to improve the reliability of the line, improving the quality of the mixture, reducing energy consumption and improving working conditions.

The drawing shows a flow line diagram.

The flow line for the preparation and supply of metallurgical raw materials is made in the form of two combined lines. One of them is designed to prepare and feed the primary mixture from sludges It consists of dewatering, its filter press sludge 1, a tank of 2 lime dust with a discharge dispenser, a device 3, a two-shaft screw mixer 4, a discharge conveyor 5, a hopper 6 for holding the mixture.

The second line contains a lime outcropping bunker 7, a crushed limestone bunker 8, a granulated slag bunker 9, a slag granary unit 10, a slag supply conveyor 11, a grinding department 12 of limestone calcining, a lime supply conveyor 13 and limestone.

The production line contains an assembly conveyor 14 and a drum mixer 15 of the finished raw material.

Flow line works as follows.

The sludge obtained at the filter presses is fed to the conveyor 5. Lime dust from the tank 2 is dispensed by the metering device 3 over the cake of the sludge to the conveyor 5, through which the components enter the mixer 4. From the mixer, the resulting mixture is fed to the hopper 6, where it is kept several hours and after exposure served

dispenser on a conveyor belt 14. The mixture after exposure is not dusty.

Lime siftings from the bunker 7, crushed lime from the bunker 8, granulated slag from the bunker 9 are delivered to the same conveyor. These materials are fed to the bunker from the granite plant 10 via the conveyor 11 and from the grinding department 12 of the lime calcining industry 13 .

The assembled components are mixed in a drum mixer 15, the finished mixture is fed to the warehouse.

The production line for the preparation and supply of metallurgical raw materials allows the use of metallurgical wastes with an increase in the reliability of the production line and improved working conditions. The use of a production line with an additional bunker provides energy savings by stopping equipment installed after an intermediate hopper (conveyors, drum mixer) during the holding period.

Uniform feeding of the mixture from the hopper also contributes to a more stable dosage of other components.

By keeping the mixture in the hopper in the vapor environment, the active oxides are almost completely hydrated, which reduces the consumption of lime dust for the preparation of 1 ton of sludge by 15-30%.

Claims (1)

Invention Formula Flow line for the preparation and supply of metallurgical raw materials for ed. St. No. 943507, characterized in that, in order to increase the reliability of the line, improve the quality of the mixture, reduce energy consumption and improve working conditions, the line for preparing the primary mixture of sludge is additionally equipped with a hopper with a metering device installed after the mixer and before the assembly conveyor.