阅读说明：本技术 一种炉渣处理工艺 (Slag treatment process ) 是由 李海龙 顾桂荣 顾志强 李运忠 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种炉渣处理工艺,通过获取炉渣、炉渣称重、输送炉渣、筛选炉渣、炉渣研磨、炉渣铁粉处理、铁屑滤除、炉渣水处理等加工工艺流程,不需要人工采用推车将炉渣进行推运操作,进行铁屑进行滤除操作,这样能有效对炉渣进行筛选,且提高了炉渣筛选的工作效率,然后经过两步破碎得到炉渣灰,使得到的炉渣灰具有合适的粒径,并在初破后复破前对炉渣依次进行磁选和电涡流分选,除去其中的磁性金属和重金属,提高其安全性,在制备混凝土时,合理控制其使用量,得到混凝土强度高、坚固性好金属离子和有机质含量低。(The invention discloses a slag treatment process, which comprises the steps of obtaining slag, weighing the slag, conveying the slag, screening the slag, grinding the slag, treating iron powder in the slag, filtering iron filings, treating water in the slag and the like, wherein a cart is not needed to push the slag manually, and the iron filings are filtered, so that the slag can be screened effectively, the working efficiency of slag screening is improved, and then the slag ash is obtained through two-step crushing, so that the obtained slag ash has a proper particle size, magnetic separation and electric eddy current separation are carried out on the slag in sequence before the slag is crushed again after the slag is crushed initially, magnetic metals and heavy metals in the slag are removed, the safety of the slag is improved, and when concrete is prepared, the using amount of the slag is reasonably controlled, so that the concrete with high strength and good firmness and low content of metal ions and organic matters are obtained.)

1. A slag treatment process is characterized in that: the method specifically comprises the following production steps:

s1: obtaining slag

Collecting slag generated in smelting of the smelting furnace together through a forklift;

s2: slag weighing

Weighing the collected slag;

s3: conveying slag

Conveying the weighed slag to a conveying belt;

s4: screening slag

Conveying the slag on the conveying belt in the step S3 to a screening device, performing thickness classification through a shaftless drum screen, and screening through a 100-mesh screen to obtain fine-particle slag and large-particle slag;

s5: grinding of slag

Grinding the large-particle slag obtained in the step S4 in grinding equipment to enable the slag to be ground into fine powder of 100 meshes, and collecting the slag ground into fine powder for later use;

s6: slag iron powder treatment

a: filtering the slag obtained in the step S5 to remove iron filings, and filtering and collecting the iron filings from an iron filings filtering mechanism;

b: filtering iron and blood from the fine slag obtained in the step S4, and filtering and collecting iron filings from an iron powder filtering mechanism;

s7: slag water treatment

Washing the granular slag obtained in the step S6 in a cold water pool, pressurizing water flow, performing water circulation on water in the pool, recycling the water after three-stage filtration, and refluxing the water to the cold water pool to obtain clean and pure slag;

s8: screening the slag obtained in the step S7 by using a screen to obtain a slag primary product;

s9: performing magnetic separation and eddy current separation on the slag primary product obtained in the step S8;

s10: re-breaking the primary slag product obtained in the step S9 by using a grinding device to obtain slag ash;

s11: and (4) bagging the slag ash obtained in the step (S10), and conveying the slag ash to the market by using a logistics vehicle.

2. A slag treatment process according to claim 1, characterised in that: the slag in step S2 is transported once per 100 tons in one lot.

3. A slag treatment process according to claim 1, characterised in that: the grain size of the fine slag in the steps S4 and S5 is 0.15-5mm, and the grain size of the coarse slag in the step S4 is 5-10 mm.

4. A slag treatment process according to claim 1, characterised in that: and warehousing the slag ash in the step S11, wherein each 5 tons of slag ash is a warehouse.

Technical Field

The invention belongs to the technical field of slag treatment, and particularly relates to a slag treatment process.

Background

In blast furnace iron-making production, the treatment process of the furnace slag is mainly divided into two treatment methods, namely a dry slag method and a water slag method. The dry slag method is that blast furnace slag is put into a dry slag pit and cooled by air, water is sprayed on the surface of the slag layer, and a multilayer thin layer slag discharging method is adopted, and the slag is cooled and crushed into compact slag blocks with proper granularity. The grain slag method is that high pressure water or machine is used to wash slag into grain slag before furnace, then the slag and water are separated, the slag washing water is recycled, and the finished grain slag can be used as cement raw material, concrete aggregate, etc.

The existing slag treatment process has the advantages that the slag generated by a smelting furnace is discharged randomly without being treated, and resources in the slag are not utilized, so that the utilization rate of the resources is influenced, and the slag treatment process is provided for better utilizing the resources of the slag.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a slag treatment process.

In order to achieve the purpose, the invention provides the following technical scheme: the invention provides a slag treatment process, which specifically comprises the following steps:

a slag treatment process is characterized in that: the method specifically comprises the following production steps:

s1: obtaining slag

Collecting slag generated in smelting of the smelting furnace together through a forklift;

s2: slag weighing

Weighing the collected slag;

s3: conveying slag

Conveying the weighed slag to a conveying belt;

s4: screening slag

Conveying the slag on the conveying belt in the step S3 to a screening device, performing thickness classification through a shaftless drum screen, and screening through a 100-mesh screen to obtain fine-particle slag and large-particle slag;

s5: grinding of slag

Grinding the large-particle slag obtained in the step S4 in grinding equipment to enable the slag to be ground into fine powder of 100 meshes, and collecting the slag ground into fine powder for later use;

s6: slag iron powder treatment

a: filtering the slag obtained in the step S5 to remove iron filings, and filtering and collecting the iron filings from an iron filings filtering mechanism;

b: filtering iron and blood from the fine slag obtained in the step S4, and filtering and collecting iron filings from an iron powder filtering mechanism;

s7: slag water treatment

Washing the granular slag obtained in the step S6 in a cold water pool, pressurizing water flow, performing water circulation on water in the pool, recycling the water after three-stage filtration, and refluxing the water to the cold water pool to obtain clean and pure slag;

s8: screening the slag obtained in the step S7 by using a screen to obtain a slag primary product;

s9: performing magnetic separation and eddy current separation on the slag primary product obtained in the step S8;

s10: re-breaking the primary slag product obtained in the step S9 by using a grinding device to obtain slag ash;

s11: and (4) bagging the slag ash obtained in the step (S10), and conveying the slag ash to the market by using a logistics vehicle.

As a further optimization of the technical solution, in the slag treatment process of the present invention, the slag in the step S2 is transported once for each 100 tons in a group.

As a further optimization of the technical scheme, the invention provides the slag treatment process, wherein the grain size of the fine slag in the steps S4 and S5 is 0.15-5mm, and the grain size of the coarse slag in the step S4 is 5-10 mm.

As a further optimization of the technical scheme, in the slag treatment process, the slag ash in the step S11 is warehoused, and each 5 tons of the slag ash is a warehouse.

The invention has the technical effects and advantages that: according to the slag treatment process, the slag is not required to be pushed and transported by a cart manually, scrap iron is removed, the slag can be effectively screened, the working efficiency of slag screening is improved, the slag ash is obtained through two-step crushing, the obtained slag ash has a proper particle size, the slag is subjected to magnetic separation and eddy current separation in sequence after primary crushing and before secondary crushing, magnetic metals and heavy metals in the slag are removed, the safety of the slag is improved, the using amount of the slag is controlled reasonably when concrete is prepared, and the concrete is high in strength and good in firmness, and the contents of metal ions and organic matters are low.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.