CN212426092U

CN212426092U - Desulphurization slag treatment device

Info

Publication number: CN212426092U
Application number: CN202020645067.1U
Authority: CN
Inventors: 朱立江; 张富信; 黄超; 张翰林; 张金良; 司佑智; 梁文玉; 黄忠源
Original assignee: Beijing Metallurgical Equipment Research Design Institute Co Ltd
Current assignee: Beijing Metallurgical Equipment Research Design Institute Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-29
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a desulfurization sediment processing apparatus, including supplying the desulfurization sediment funnel, drag chain conveyor, biax breaker and the slag pan car that passes through in order, the discharge end of funnel is located the transport drag chain top of drag chain conveyor's pan feeding end, and the top of carrying the drag chain still is provided with the cooling that is used for storing spreading the powder storehouse of blocking agent and is used for spraying the cooling water and sprays the mechanism, and blocking agent, desulfurization sediment and cooling water fall in proper order to carrying the drag chain, and biax breaker is located the below of drag chain conveyor's discharge end. The utility model discloses on well desulfurization sediment takes off the back and falls to the transport link joint through the funnel, through spray cooling and natural cooling in the chain scraper conveyer transportation, molten state desulfurization sediment cooling crusts, then transport the terminal biax breaker of chain scraper conveyer by chain scraper conveyer and carry out breakage, the broken fritter sediment that becomes can directly utilize of desulfurization sediment, and owing to through abundant cooling, can not bond again between each other after the desulfurization sediment is broken, can recycle after follow-up screening.

Description

Desulphurization slag treatment device

Technical Field

The utility model relates to a technical field is handled to the desulfurization sediment, especially relates to a desulfurization sediment processing apparatus.

Background

The molten iron desulphurization station is a molten iron pretreatment means commonly adopted by steel plants at present, and mainly aims to carry out desulphurization treatment on molten iron, provide molten iron with qualified sulfur components for a converter and reduce the smelting burden of the converter. The desulfurizing agent is combined with the sulfur in the molten iron through the dynamic condition formed by gas stirring or mechanical stirring in the adding of the desulfurizing agent, so that the aim of desulfurization is fulfilled. The generated desulfurization product floats to the liquid level of molten iron to become desulfurization slag. In order to prevent the desulfurization slag from being mixed into the molten iron, the desulfurization slag is scraped into a desulfurization slag pan below the molten iron tank through a slag scraping operation after the desulfurization operation is finished. The resulting desulfurized slag is often mixed with relatively high levels of pure iron and must be recycled. The iron content of the desulphurization slag is about 70 to 80 percent, and the desulphurization slag has high recycling value.

The molten desulphurization slag is taken out of the hot-metal ladle by the slag removing machine and falls into a slag pan to be accumulated, and then is very easy to be bonded into large slag, the hardness of the large desulphurization slag after being cooled is very high, a crusher cannot be crushed, and a hot stewing slag pit is also stuffy and cannot be treated very easily. But the desulfurized slag can be recycled only after being crushed into small-size grain diameter allowed by the in-plant process. At present, the desulfurized slag is basically subjected to offline gravity crushing after being cooled, and the efficiency is very low. The common method of the steel plant at present is a water-pumping, temperature-reducing and crushing method: firstly, the desulfurized slag is taken out of a hot metal tank and then is filled into a slag (disc) tank, then the desulfurized slag is subjected to tank-carrying water pumping, namely, the molten iron desulfurized slag in the tank is directly sprayed by water, the temperature of the desulfurized slag is reduced to be below 50 ℃, then the molten iron desulfurized slag is poured into a slag pit, a 10 t-15 t iron hammer is lifted to the height of 4 m-10 m, and the large desulfurized slag is crushed by utilizing the impact force of free falling of the iron hammer. The desulfurized slag can be recycled after repeated crushing and magnetic separation. The treatment method has low production efficiency, complex treatment process and low efficiency, the granularity of the desulfurized slag obtained after crushing is not uniform, the risk coefficient of the treatment process is high, and the environmental pollution is serious. If the characteristics of the desulphurization slag can be determined: the method has the characteristics of small slag amount and low temperature, and is an optimal method for treating the desulfurization slag, wherein the desulfurization slag in a high-temperature state is continuously treated into small-size slag blocks in an online manner. Generally, if the particle size of the processed slag block is less than 10 cm, the requirement can be met.

How to treat and crush the desulfurized slag more efficiently and more environmentally is a technical problem which needs to be solved by various steel mills at present; the prior art has the following methods: the principle of the method for treating the desulfurized slag by using the blocking agent is that a proper amount of the blocking agent is added in the intermission period after the desulfurized slag is removed by a slag removing machine, so that a blocking layer is formed between the front slag removing operation and the rear slag removing operation, and a barrier zone is formed between the upper part and the lower part of the desulfurized slag to reduce the contact between the upper part and the lower part of the desulfurized slag; the method has the advantages that although the molten desulfurized slag which is successively scraped can be blocked into a plurality of sections, the manual powder laying and the off-line subsequent crushing treatment are needed, and the difficulty of the subsequent slag block crushing is relieved to a certain extent;

the principle of treating the desulfurized slag by a water-beating pulverization method is that firstly, the desulfurized slag is subjected to water-beating pulverization, part of slag materials are subjected to slag block embrittlement caused by an extremely cold and extremely hot process in the water-beating cooling process, the slag blocks are changed from big to small, and after the water-beating cooling, the cooled desulfurized slag blocks are crushed by using a jaw crusher after the oversized slag blocks are broken; the disadvantages are that: the pulverization effect after the water is pumped and the temperature is reduced is poor, and the residual large slag still needs to be continuously crushed;

the principle of the roller method for treating the desulfurized slag is that after converter slag is discharged, liquid slag is directly poured into a roller which is provided with steel balls and runs, water is sprayed, high-temperature steel slag is rapidly cooled, pulverized and ground, then flows into a granulating wheel and is thrown out, the crushing and slag-steel separation are synchronously completed, and the steel-making slag does not fall to the ground; the disadvantages are that: the equipment has high cost and low efficiency, the processing capacity of the equipment is suitable for the production condition with larger slag amount, for example, the slag amount of the steel slag generated by a converter is smaller, and the equipment can not exert the self efficiency;

the process for treating the desulfurized slag by a double-shaft double-roller crushing method comprises the following steps: after the slagging-off machine takes off the desulfurized slag from the hot metal ladle, the desulfurized slag falls into the double-shaft crusher to be crushed in real time, the desulfurized slag with small granularity is formed after crushing, the crushed desulfurized slag is uniformly distributed on a chain plate of the chain plate machine and then is conveyed into a slag collecting disc by the chain plate machine, and desulfurized slag blocks entering the slag collecting disc cannot be bonded again due to heat dissipation in the treatment process, so that better crushing and separating effects are achieved; the double-shaft double-roller crusher has the defect that the double-shaft double-roller crusher cannot work durably because the double-shaft double-roller crusher cannot adapt to the treatment working condition of hot slag in a molten state.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a desulfurization sediment processing apparatus to solve the problem that above-mentioned prior art exists, collect the transport to the desulfurization sediment that the slagging-off machine was taken off out, and accomplish through adjusting conveying speed and pave, cool off and broken handle in transportation process, reduce the requirement to subsequent magnetic separation, screening.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a desulfurization sediment processing apparatus, including supplying desulfurization sediment funnel, chain scraper conveyor, biax breaker and the slag pan car that passes through in order, the discharge end of funnel is located the transport chain scraper top of chain scraper conveyor's pan feeding end, the top of carrying the chain scraper still is provided with the cooling that is used for storing the shop powder storehouse of blocking agent and is used for spraying the cooling water and sprays the mechanism, the blocking agent the desulfurization sediment with the cooling water fall in proper order to carry the chain scraper, biax breaker's pan feeding end is located the below of chain scraper conveyor's discharge end, biax breaker's discharge end is located the pan feeding end top of slag pan car.

Preferably, the conveying chain plate machine is arranged obliquely so as to arrange the double-shaft crusher and the abutting joint slag jigger in a limited space, and the discharge end of the conveying chain plate is higher than the feed end of the conveying chain plate;

preferably, the double-shaft crusher further comprises a cooling water tank and a circulating water system, wherein the cooling water tank supplies cooling water to the double-shaft crusher and the cooling spraying mechanism through a water supply pump, the circulating water system comprises a water collecting tank arranged below the double-shaft crusher and the chain scraper conveyor, and sewage in the water collecting tank flows into the cooling water tank after being treated;

preferably, the double-shaft crusher comprises a shell and a toothed roller which is arranged in the shell in a relative rotation manner and is used for crushing the desulfurized slag with crusts on the surface;

preferably, a slag scraping plate for paving the accumulated desulfurized slag on the conveying chain plate is arranged below the discharge end of the hopper;

preferably, the hopper, the powder spreading bin, the chain scraper conveyor and the double-shaft crusher are fixed on the same railcar.

The utility model discloses for prior art gain following technological effect:

in the desulfurization slag treatment device, before the desulfurization slag is taken off or falls onto the conveying chain plate, the powder spreading bin spreads lime powder or slag powder as a blocking agent on the conveying chain plate, so that the desulfurization slag is prevented from being adhered to the conveying chain plate, and the conveying chain plate is protected from being damaged by high temperature of molten slag; the desulfurization slag falls to the transport link joint through the funnel after taking off, through spray cooling and natural cooling in the chain scraper conveyor transportation, the cooling incrustation of molten state desulfurization slag, the desulfurization slag of incrustation is carried the terminal biax breaker of chain scraper conveyor by chain scraper conveyor and is broken, the broken fritter sediment that becomes can directly utilize of desulfurization slag, and owing to through abundant cooling, can not bond again between each other after the desulfurization slag is broken, can recycle after follow-up screening.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of the entire structure of the desulfurization slag treatment apparatus of the present invention;

wherein, 1 slag jigger, 2 double-shaft crusher, 3 chain plate conveyer, 4 cooling and spraying mechanism, 5 funnel, 6 powder spreading bin and 7 hot metal ladle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The utility model provides a desulfurization slag treatment device, including the funnel 5 that supplies the desulfurization slag to pass through in order, drag chain conveyor 3, biax breaker 2 and slag barring 1, the discharge end of funnel 5 is located the transport link joint top of the pan feeding end of drag chain conveyor 3, the top of carrying the link joint still is provided with shop's powder storehouse 6 and the cooling spray mechanism 4 that is used for spraying the cooling water that is used for storing the blocking agent, the desulfurization slag and the cooling water fall to carrying the link joint in proper order, the pan feeding end of biax breaker 2 is located the below of the discharge end of drag chain conveyor 3, the discharge end of biax breaker 2 is located the pan feeding end top of slag barring 1; wherein the blocking agent is lime powder or slag powder; the hopper 5, the chain scraper conveyor 3, the double-shaft crusher 2, the cooling spraying mechanism 4 and the slag turning gear 1 are all devices in the prior art, and are not particularly limited herein; preferably, in order to improve the cooling effect, cooling water sprayed out of the spray outlets of the cooling spray mechanism 4 is perpendicular to the surface of the conveying chain plate, and the spray outlets are arranged in rows along the conveying direction, wherein the arrangement length is not less than one half of the length of the conveying chain plate; before the desulfurization slag is scraped out or before the desulfurization slag in the hot metal ladle 7 falls onto a conveying chain plate, a powder paving bin 6 paves lime powder or slag powder as a blocking agent on the conveying chain plate to prevent the desulfurization slag from being adhered to the conveying chain plate and protect the conveying chain plate from being damaged by high temperature of molten slag; the desulfurization slag takes off the back and falls to the transport link joint through funnel 5 on, through spray cooling and natural cooling in the 3 transportation of chain conveyor, molten state desulfurization slag cooling encrustation, the desulfurization slag of encrustation is carried in chain conveyor 3 transports 3 terminal biax breaker 2 of chain conveyor and is broken, the broken fritter sediment that becomes can directly utilize of desulfurization slag, and owing to through abundant cooling, can not bond again between the broken back of desulfurization slag each other, can recycle after follow-up screening.

In order to avoid the device occupying too large height space, the conveying chain plate machine adopts inclined arrangement so as to arrange the double-shaft crusher 2 and the butt joint slag pan vehicle in a limited space, and the setting height of the discharging end of the conveying chain plate is higher than that of the feeding end of the conveying chain plate;

the utility model also comprises a cooling water tank and a circulating water system, wherein the cooling water tank supplies cooling water to the double-shaft crusher 2 and the cooling spraying mechanism 4 through a water supply pump, the circulating water system comprises a water collecting tank arranged below the double-shaft crusher 2 and the chain plate conveyor 3, and sewage in the water collecting tank flows into the cooling water tank after being treated; the cooling water tank and the circulating water system are both equipment in the prior art, and the cooling water tank can be an intelligent welding machine cooling water tank with the application number of 201610131657.0; the circulating water system can be a circulating water filter such as that disclosed in application number 201510145761.0;

the utility model discloses a double-shaft crusher 2 comprises a shell and a tooth roller which is arranged in the shell and rotates relatively and is used for crushing the desulphurization slag with crusts on the surface;

the lower part of the discharge end of the middle funnel 5 of the utility model is provided with a slag scraping plate for paving and conveying the accumulated desulphurization slag on the chain plate; wherein, the scraper bar can be fixed on the frame of the chain-plate conveyor 3, and the scraper bar is of an existing structure, such as can be similar to the scraper bar structure for the mucking machine with application number 201611025508.2.

The utility model discloses well funnel 5, shop's powder storehouse 6, drag conveyer 3 and biax breaker 2 are fixed in on the same railcar.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a desulfurization sediment processing apparatus, its characterized in that, is including supplying funnel, drag chain conveyor, biax breaker and the slag pan car that the desulfurization sediment passes through in order, the discharge end of funnel is located the transport drag chain top of drag chain conveyor's pan feeding end, the top of carrying the drag chain still is provided with the cooling that is used for storing spreading the powder storehouse of blocking agent and is used for spraying the cooling water and sprays the mechanism, the blocking agent the desulfurization sediment with the cooling water falls in proper order to carry the drag chain, the pan feeding end of biax breaker is located the below of drag chain conveyor's discharge end, the discharge end of biax breaker is located the pan feeding end top of slag pan car.

2. The desulfurization slag treatment apparatus according to claim 1, characterized in that: the conveying chain plate machine is obliquely arranged so that the double-shaft crusher and the slag turning gear in butt joint can be conveniently arranged in a limited space, and the height of the discharging end of the conveying chain plate is higher than that of the feeding end of the conveying chain plate.

3. The desulfurization slag treatment apparatus according to claim 1 or 2, characterized in that: still include cooling water tank and circulating water system, cooling water tank passes through the working shaft to the biax breaker with the cooling sprays the mechanism and supplies with the cooling water, circulating water system is including arranging in the biax breaker with the catch basin of drag chain conveyor below, sewage in the catch basin flows into after handling cooling water tank.

4. The desulfurization slag treatment apparatus according to claim 3, characterized in that: the double-shaft crusher comprises a shell and a toothed roller which is arranged in the shell in a relative rotating mode and is used for crushing the desulfurized slag with crusts on the surface.

5. The desulfurization slag treatment apparatus according to claim 4, characterized in that: and a slag scraping plate used for paving the accumulated desulfurization slag on the conveying chain plate is arranged below the discharge end of the funnel.

6. The desulfurization slag treatment apparatus according to claim 1, characterized in that: the hopper, the powder spreading bin, the chain scraper conveyor and the double-shaft crusher are fixed on the same railcar.