SU1416840A1 - Arrangement for delivering charge into bath of ore-smelting furnace - Google Patents

Abstract

The invention relates to the field of furnace construction, specifically to charging devices, and can be used in the chemical industry, in ferrous and non-ferrous metallurgy, where ore-thermal closed furnaces are operated. The purpose of the invention is to ensure the maintenance of the furnace. On the tube 3 there is a sealed chamber 5, to which the system 6 of the gas suction is connected. At the same time, the section 4 of the tube 3, located inside the chamber 5, is provided with holes in the walls. It is also envisaged that the section 4 can be made of gas-filtering material, for example, of cermet. Due to the constant maintenance of the vacuum inside the sealed chamber, the furnace gases are not released into the volume of the hopper 1, which results in the sealing of the loading unit and does not create the threat of the formation of an explosive gas mixture. 1 hp f-ly, 1 ill. (L O) 00 4

Description

1- 1416840

the invention relates to the pechestroet in and nor ack si op those he

It can be used in the chemical industry, in ferrous and nonferrous metallurgy, where ore-thermal explosives are exploited.

The purpose of the invention is to ensure the maintenance of the furnace. I The drawing shows the proposed device, a vertical section.

The device includes a bunker 1, a furnace bath 2, a pipe blower 3 connecting

ten

chatter and furnace depends on the ratio of air drawn in from the hopper and gas from the bath. For a given position of the tube section, the content of the promotional gas in the gas-air mixture will not exceed the minimum explosive ratio, i.e. The solution to this gas suction is simplified. In addition, the amount of suction reaction gas will be minimal.

Performing a portion of the tube, inside which the gas pressure is maintained below atmospheric, from the gas

Bath with bath and buried in the bath- 5 filter material almost hy. Pipe 3 contains a section 4, Tschnolnens of gas-filtering material (metal-ceramic) and enclosed inside chamber 5, to which there is no drink in the extracted gas, which greatly simplifies the solution of the gas suction system. In addition, the filter solution is simplified.

0

chatter and furnace depends on the ratio of air drawn in from the hopper and gas from the bath. For a given position of the tube part, the content of the reaction gas in the gas-air mixture will not exceed the minimum explosive ratio, i.e. The solution to the gas suction system is simplified. In addition, the amount of suction of the reaction gas will be minimal.

The implementation of the section of the blower tube, inside which the gas pressure is maintained below atmospheric pressure, from the gas5 of filtering material is practically

filter material practically

ensures the absence of draining in the sucked gas, which greatly simplifies the solution of the gas suction system. In addition, the filter solution is simplified.

Connected system 6 suction gas. Tru - 20 Pa for gas cleaning, since cleaning

The drip 3 is introduced into the bath 2 through the lid of the roof 7 with the seal 8. Part of the hopper 1, tube 3 and part of the bath 2 are filled with charge 9. The level of the charge in the bath is determined by the top plate 10..

The device works as follows.

The charge level in the bunker 1 is monitored and maintained within certain limits by periodic ZO of the promotional gas to the air in the gas supply of the charge to the bunker 1. The mixture is filled with air mixture of 1: 6.5. The pressure is quenched by the blower 3 and part of the bath 2 (the filtering surface is carried out with a moving charge.

An example of testing and operation of the device for loading the charge.

Closed ore-smelting furnace for the production of calcium carbide operates in a routine manner. The reaction gases contain 94% CO, the minimum explosion hazard ratio of cuts in the bath is 50 MPa. The supply system of the charge into the bath consists of 16 parallel devices: a pipe section 10 of the furnace top). As the charge is pumped out of the tubes, the charge is poured into the bath, maintaining that 35m top level 10, the air-gas mixture is sucked out of chamber 5, in which a vacuum is created sufficient to filter through the gas tube section 4. Under the action of pressurizing the air from the bunker 1 and the reaction gases from the bath 2 are sucked in to the section 4 of the blower tube.

While maintaining the gas flow section in the chamber in the chamber, the gas pressure is below atmospheric, we exclude, in any condition of the charge in the flow tubes, including disruption of the charge supply, ingress of the reaction gas

 ---- .., „,,

Thus, the ingress of the reaction gas into the workshop atmosphere is ensured and the furnace service is safe, and the furnace is also sealed at the same time. From the position of the portion of the tube, inside which the gas pressure is maintained below atmospheric, as well as from the pressure in this portion of the tube

action gas to air in an air-gas mixture ha 1: 6.5. Pressure ga-

the filtering surface is carried out by the moving charge.

An example of testing and operation of the device for loading the charge.

Closed ore-smelting furnace for the production of calcium carbide operates in a routine manner. The reaction gases contain 94% CO, the minimum anti-hazard ratio of the reaction gas to air in the gas mixture is 1: 6.5 ha. Pressure ga-

call in the bath P 50 MPa. The system of supplying the charge to the bath consists of 16 parallel devices: a pipe section

gases P 6 Pa (vacuum), located at a distance of 1 0,6 m from the top of the tube, total length of the tube L 18m. The section of the tube where the pressure P 6 Pa is maintained is made of a gas-filtering metal-ceramic and is inside the chamber from which the gas-air mixture is sucked in, on average, 35.

The use of the proposed device at the ore-thermal furnace for the production of calcium carbide makes it possible to normalize the gaseous regime in the furnace charging device, eliminate the emissions of the reaction gas through the furnace charging devices into the workshop atmosphere and thereby ensure the safety of the furnace removal.

Formula of invention

1. Device for supplying the charge to the bath of the ore-thermal furnace, containing 311416840: 4

The bucket hopper, the pipe stopper, the joints of the inside of the chamber are made from the empty bunker with the hole and recessed into the holes,

bath, characterized by 2. The device according to claim 1, 1, of t and h, in order to ensure the safety with the fact that the wall section

its servicing, a trubotechka an additional tube, located in a hermetically sealed one; The chamber chamber is made of gas-filtering apparatus with a gas suction system, and the walls of the rubbing material.

Claims (2)

Claim 1. A device for feeding the mixture into the bath of an ore-thermal furnace containing 1416840 7 live hopper, tubule connecting the hopper to this and buried in the bath, characterized in that, in order to ensure the safety of its maintenance, the tubule is additionally equipped with a sealed chamber with a gas suction system, and the walls of the tubule inside the chamber are made with holes. 2. The device according to claim 1, characterized in that the wall of the tubule section located in the sealed chamber is made of gas-filtering material.