SU1638185A1 - Machine for charging mixture to sintering cars - Google Patents

Abstract

This invention relates to the preparation of iron ore in ferrous metallurgy. The goal is to reduce fuel consumption and increase the productivity of sintering machines. This is achieved by rational separation of the charge loaded on the sintering machine into fractions with a gradual decrease in the size of the charge from the bottom upwards by including into the charge segregation unit the charge flow stabilizer installed behind the drum feeder and the rotary vertical distributor sheet located between the sheet segregator and the loading tray. The application of the invention allows to increase the vertical sintering rate by 4-6%, reduce the content of fines by 0.4%, fuel consumption by 2%. 1 il. (L

Description

The invention relates to the preparation of iron ore in ferrous metallurgy, in particular to the construction of sintering machines.

The aim of the invention is to reduce fuel consumption and increase the productivity of sintering machines.

The goal is achieved by the fact that the device for loading the charge on the sintering carts of sintering machines, including a storage bin, a drum feeder and a segregation unit of the charge consisting of a segregator sheet tilted 33-60 ° to the horizon, and the loading tray are fitted with feeder flow stabilizer charge and turning vertical

the sheet divider, located between the sheet-segregator and the loading tray.

The drawing shows a diagram of the device. The device contains a storage bin 1, a drum feeder 2 with a stabilizer 3, a leaf segregator 4, a leaf divider 5 and a loading bar, current 6.

The device works as follows.

Sintering mixture from the storage hopper 1 drum feeder 2 is metered to the stabilizer 3 flow of the mixture. From the shelf of the stabilizer 3, the mixture is fed to an inclined segregator sheet 4 and is moved along it at an inclination angle of 45 ° (at an angle of external friction of the fraction of the charge 0-3 mm 42),

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During this movement, the charge is separated in an obliquely flowing layer — coarse fractions come to the surface in the upper layers of the layer, small ones adjoin the segregation sheet. In addition, the flow thickness is reduced by particle acceleration. After separation in the oblique-discharging layer, the flow of the charge is transferred to the free fall mode and the coarse fraction of the charge is separated from the shallow by means of the vertical separator sheet 5. After separation of the fine fraction, the mixture remains in free fall mode. The coarse fraction of the charge is re-segregated on the inclined sheet 6 and larger particles are fed to the grate, ensuring a gradual reduction in the size of these particles from the bottom to the top. A flow of small fractions of the charge is laid on the lower layer thus formed in the free fall mode.

To ensure efficient operation of the device, the segregator sheet 4 is set at an angle of 45 ° to the horizon. This ensures the most efficient segregation of the charge, the formation of a layer flowing from the sheet with a maximum transverse (horizontal) cross section, which reliably divides the flow of the charge into two by size. A decrease in the angle of inclination of the segregator sheet is possible only up to a value of 33 ° (the angle of external friction of the fraction 0–3 mm). So, already at the angle of inclination of the segregator 4, equal to 37 °, there is an accumulation of small fractions on the plane;

and the subsequent stopping of the boundary layer. The gas-dynamic resistance of the batch on sintering carts increases by 7–10%. Increasing the angle of inclination of the segregator sheet is only possible up to 60 °. For example, when the angle of inclination of the segregator 4 is 63 °, it significantly decreases.

JQ is the velocity difference between large and small particles, the efficiency of their separation decreases, and the gas-dynamic resistance of the charge mixture on carts increases by 3-5%.

The application of the invention provides an increase in the vertical sintering rate of 4-6%. Due to the growth of gas permeability, the height of the layer of the charged mixture is increased by 40-60 mm,

2Q which ensures a decrease in the content of class trifles - 5 mm in the sinter by 0.4% and fuel consumption by 2.0%.

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Claims (1)

Invention Formula A device for loading the charge on sintering carts of sintering machines, containing a storage bin, a drum feeder and a regimentation unit of the charge, consisting of a segregator sheet having a slope of 38 - 60 to the horizon, and a loading tray, characterized in that reducing fuel consumption and increasing the productivity of sintering machines; it is equipped with a charge flow stabilizer installed behind the drum feeder and a rotatable vertical splitter sheet located between the shoger sheet40 torus and feed tray. Invention Formula A device for loading the charge on sintering carts of sintering machines, containing a storage bin, drum feeder and charge segregation unit, consisting of a segregation sheet, having a slope of 38 - 60 to the horizon, and a loading tray, characterized in that in order to reduce fuel consumption and increase the productivity of sintering machines, it is equipped with a charge flow stabilizer installed behind the drum feeder and a rotary vertical splitter sheet located between the shogre sheet torus and feed tray. l: t itte. & VSSX