Device and method for classified recovery of ferrous metallurgy solid waste

Abstract

The invention discloses a ferrous metallurgy solid waste classification recovery device and method.The device comprises a rear wall body, the front side of the rear wall body is connected with a plurality of side wall bodies arranged side by side, the side wall bodies and the rear wall body jointly divide a plurality of waste storage areas, and hanging rings are arranged on the side wall bodies on the two sides of each waste storage area; an original bag is arranged in each waste storage area, and an opening of each original bag is connected with a hanging ring through a hanging rope. The method comprises the steps that metallurgical solid waste generated in the quality inspection process is classified and stored in original bags of corresponding waste storage areas; and each waste storage area is cleaned regularly, and each original bag is sealed and recycled respectively. According to the ferrous metallurgy solid waste classified recycling device and method, multiple kinds of solid waste can be stacked separately, the recycling rate of the waste is increased, and resource waste is reduced.

Description

Technical Field

[0001] The present invention relates to the field of metallurgical waste classification, and in particular to a device and method for classifying and recovering iron and steel metallurgical solid waste. Background Art

[0002] In recent years, with the continuous increase in the factory's steel production, the demand for raw materials, fuels and auxiliary materials has continued to increase, and the batches and inspection frequency of raw materials, fuels and auxiliary materials purchased from outside the factory have also continued to increase (the same unit, the same product name, and the same day entering the factory are considered a batch, and each batch is sampled and tested). Due to the increase in sampling frequency, the metallurgical solid waste generated in the quality inspection process has also continued to increase. The total amount of solid waste generated by quality inspection in a single day reaches hundreds or thousands of kilograms (ore samples, sintered ore, pelletized ore, alloys and other materials 30 kg / piece, coal, lime and other materials 20 kg / piece, coke particle size samples 280-350 kg / piece, drum samples 50 kg / piece, thermal properties samples 40 kg / piece, and other inspection samples, outsourced samples, etc. are no less than forty or fifty samples per day).

[0003] At present, solid waste generated by quality inspection is mixed and stacked, with multiple varieties mixed together, and uniformly recycled to the ironmaking sintering plant for use. In particular, if the outsourced samples (dry dust removal ash, gas ash, gas mud, etc.) with high content of harmful elements such as potassium, sodium, lead and zinc are not reasonably classified and effectively recycled and reused, firstly, the purchased materials cannot be reasonably and effectively utilized, resulting in the loss of factory procurement costs, and secondly, the application in sintering ingredients will also affect the composition of sintered ore, resulting in fluctuations in the quality of sintered ore. Therefore, a solid waste classification and recycling method is urgently needed to reasonably recycle and reuse the solid waste generated in the quality inspection process to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for classifying and recycling solid waste from iron and steel metallurgy, which can stack multiple types of solid waste separately, improve the recycling rate of the waste and reduce resource waste.

[0005] To achieve the above-mentioned purpose, the present invention provides a steel metallurgical solid waste classification and recovery device, including a rear wall, a plurality of side walls arranged in parallel are connected to the front side of the rear wall, each side wall and the rear wall together divide a plurality of waste storage areas, each waste storage area is provided with a hanging ring on the side walls on both sides, each waste storage area is provided with an original bag, and the opening of the original bag is connected to the hanging ring by a hanging rope.

[0006] As a further improvement of the present invention, the waste material storage area includes a raw material storage area, a fuel storage area, a solvent storage area, an alloy storage area and an auxiliary material storage area.

[0007] To achieve the above-mentioned purpose, the present invention also provides a method for classifying and recycling iron and steel metallurgical solid waste, which classifies the metallurgical solid waste generated during the quality inspection process and stores it in original bags in the corresponding waste storage areas; regularly cleans each waste storage area, seals each original bag and recycles it separately.

[0008] As a further improvement of the present invention, the metallurgical solid waste generated during the quality inspection process is classified according to raw materials, fuels, solvents, alloys and auxiliary materials, and stored in original bags in the raw material storage area, fuel storage area, solvent storage area, alloy storage area and auxiliary material storage area respectively.

[0009] As a further improvement of the present invention, the raw material includes iron ore, and the iron ore includes powder ore and lump ore; the original bag containing the raw material is recycled to the ironmaking raw material yard.

[0010] As a further improvement of the present invention, the fuel includes coke, coal, and coke powder; the original bag filled with coke is recovered to the coke bin, the original bag filled with coal is recovered to the coal bin, and the original bag filled with coke powder is recovered to the coke powder bin.

[0011] As a further improvement of the present invention, the solvent includes steelmaking solvent and ironmaking solvent; the steelmaking solvent includes light-burned dolomite blocks and calcareous metallurgical lime; the ironmaking solvent includes light-burned dolomite powder, calcareous quicklime and slaked lime; the original bags containing the steelmaking solvent are recovered to the lime receiving trough of the steelmaking plant, and the original bags containing the ironmaking solvent are recovered to the sintered lime silo of the ironmaking plant.

[0012] As a further improvement of the present invention, the alloy includes manganese silicon alloy, vanadium nitrogen alloy, and ferrosilicon; the original bag containing the alloy is recovered to the alloy warehouse.

[0013] As a further improvement of the present invention, the auxiliary materials include molten steel insulation, molten iron insulation, and slag-making deoxidizer; the auxiliary materials in the original bag are classified and recycled according to the requirements of the manufacturer.

[0014] Beneficial Effects

[0015] Compared with the prior art, the advantages of the iron and steel metallurgical solid waste classification and recovery device and method of the present invention are:

[0016] 1. It solves the problem that the existing mixed stacking of multiple types of solid wastes leads to low waste utilization, serious waste of resources, influence on the composition of sintered ore, and fluctuation in the quality of sintered ore;

[0017] 2. Improve the recycling rate of waste materials and avoid the loss of factory procurement costs.

[0018] 3. Avoid the situation where the sintered ore composition is affected by mixed stacking, resulting in fluctuations in the sintered ore quality.

[0019] The present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, which are used to illustrate embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the structural diagram of the steel metallurgical solid waste classification and recycling device. DETAILED DESCRIPTION

[0022] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] Example

[0024] The specific embodiments of the present invention are as follows Figure 1 As shown, a steel metallurgical solid waste classification and recovery device includes a rear wall 6, and a plurality of side walls 7 arranged in parallel are connected to the front side of the rear wall 6. The side walls 7 and the rear wall 6 together divide a plurality of waste storage areas. The side walls 7 on both sides of each waste storage area are provided with hanging rings 9, and each waste storage area is provided with an original bag 8. The opening of the original bag 8 is connected to the hanging ring 9 by a hanging rope.

[0025] The waste storage area includes a raw material storage area 1, a fuel storage area 2, a solvent storage area 3, an alloy storage area 4 and an auxiliary material storage area 5.

[0026] The classification and recycling method of iron and steel metallurgical solid waste is as follows: the metallurgical solid waste generated during the quality inspection process is classified and stored in the original bags 8 of the corresponding waste storage area. Each waste storage area is cleaned regularly, and each original bag 8 is sealed and recycled separately.

[0027] The metallurgical solid waste generated during the quality inspection process is classified into raw materials, fuels, solvents, alloys and auxiliary materials, and stored in original bags 8 in the raw material storage area 1, the fuel storage area 2, the solvent storage area 3, the alloy storage area 4 and the auxiliary material storage area 5 respectively.

[0028] The metallurgical solid waste generated during the quality inspection process is classified and stored, and cleaned and recycled regularly. The recycling is carried out in a corresponding recycling method. After all samples are prepared, they are sealed in the original bags and stored in the recycling device according to their categories. Cleaned and recycled regularly, they are recycled to the raw material yard, coke bin, coal bin, coke powder bin, lime receiving trough, and alloy warehouse, as follows:

[0029] The raw materials include iron ore, which includes powder ore and lump ore. The original bag 8 containing the raw materials is recycled to the ironmaking raw material yard.

[0030] Fuel includes coke, coal, and coke powder. According to the type of fuel, a plurality of original bags 8 can be arranged in the fuel storage area 2. The original bag 8 filled with coke is recycled to the coke bin, the original bag 8 filled with coal is recycled to the coal bin, and the original bag 8 filled with coke powder is recycled to the coke powder bin.

[0031] Solvents include steelmaking solvents and ironmaking solvents. Two original bags 8 can be set in the solvent storage area 3, which are used to store steelmaking solvents and ironmaking solvents respectively. Steelmaking solvents include light-burned dolomite blocks and calcareous metallurgical lime. Ironmaking solvents include light-burned dolomite powder, calcareous quicklime, and slaked lime. The original bag 8 containing steelmaking solvent is recycled to the lime receiving tank of the steelmaking plant, and the original bag 8 containing ironmaking solvent is recycled to the sintered lime silo of the ironmaking plant.

[0032] Alloys include manganese silicon alloy, vanadium nitrogen alloy, and ferrosilicon. The original bag 8 containing the alloy is recycled to the alloy warehouse. Since the purchase price of alloys is expensive, ranging from thousands to hundreds of thousands, and is greatly affected by trace elements, alloy materials must be stored separately according to different alloy names, such as manganese silicon alloy, vanadium nitrogen alloy, ferrosilicon, etc., and detailed handover is carried out with the warehouse keeper, recording relevant information such as alloy type, number of bags, weight, etc.

[0033] The auxiliary materials include molten steel heat preservation agent, molten iron heat preservation agent, and slag deoxidizer. The different auxiliary materials in the original bag 8 are classified, and communicated with the on-site personnel of the production plant in advance, and recycled and reused according to the requirements of the production plant.

[0034] In addition, marketing survey samples are recycled and reused according to material categories.

[0035] Outsourced samples are also called production guidance samples. They are non-formal batch and non-settled samples, such as dust ash, converter mud, gas ash, gas mud, return ore, tailings, blast furnace slag, and the factory's own products such as pellets, cold pressed blocks, and iron ore concentrate. Because some outsourced samples contain higher levels of harmful elements (potassium, sodium, lead, and zinc), such as dry dust ash, gas ash, gas mud and other materials, for the recycling and reuse of such solid waste, the ironmaking plant must be notified to use them according to the ratio to avoid production fluctuations and affect blast furnace production.

[0036] The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A device for classifying and recycling solid waste from iron and steel metallurgy, characterized in that: The utility model comprises a rear wall (6), the front side of which is connected to a plurality of side walls (7) arranged in parallel, each side wall (7) and the rear wall (6) together divide a plurality of waste storage areas, a lifting ring (9) is provided on the side walls (7) on both sides of each waste storage area, a raw bag (8) is provided in each waste storage area, and the opening of the raw bag (8) is connected to the lifting ring (9) through a lifting rope.

2. The device for classifying and recycling solid waste from iron and steel metallurgy according to claim 1, characterized in that: The waste material storage area comprises a raw material storage area (1), a fuel storage area (2), a solvent storage area (3), an alloy storage area (4) and an auxiliary material storage area (5).

3. A method for classifying and recycling solid waste from iron and steel metallurgy, characterized in that: The metallurgical solid waste generated during the quality inspection process is classified and stored in the original bags (8) of the waste storage area corresponding to claim 2; each waste storage area is cleaned regularly, and each original bag (8) is sealed and recycled separately.

4. A method for classifying and recycling iron and steel metallurgical solid waste according to claim 3, characterized in that: The metallurgical solid waste generated during the quality inspection process is classified into raw materials, fuels, solvents, alloys and auxiliary materials, and stored in original bags (8) in a raw material storage area (1), a fuel storage area (2), a solvent storage area (3), an alloy storage area (4) and an auxiliary material storage area (5).

5. A method for classifying and recycling iron and steel metallurgical solid waste according to claim 4, characterized in that: The raw materials include iron ore, which includes powder ore and lump ore; the original bag (8) containing the raw materials is recycled to the ironmaking raw material field.

6. A method for classifying and recycling iron and steel metallurgical solid waste according to claim 4, characterized in that: The fuel includes coke, coal and coke powder; the original bag (8) containing coke is recovered to the coke bin, the original bag (8) containing coal is recovered to the coal bin, and the original bag (8) containing coke powder is recovered to the coke powder bin.

7. A method for classifying and recycling iron and steel metallurgical solid waste according to claim 4, characterized in that: The solvent includes a steelmaking solvent and an ironmaking solvent; the steelmaking solvent includes light-burned dolomite blocks and calcareous metallurgical lime; the ironmaking solvent includes light-burned dolomite powder, calcareous quicklime and slaked lime; the original bag (8) containing the steelmaking solvent is recycled to the lime receiving tank of the steelmaking plant, and the original bag (8) containing the ironmaking solvent is recycled to the sintered lime silo of the ironmaking plant.

8. A method for classifying and recycling iron and steel metallurgical solid waste according to claim 4, characterized in that: The alloys include manganese silicon alloy, vanadium nitrogen alloy and ferrosilicon; the original bag (8) containing the alloys is recycled to the alloy warehouse.

9. A method for classifying and recycling iron and steel metallurgical solid waste according to claim 4, characterized in that: The auxiliary materials include molten steel heat preservation agent, molten iron heat preservation agent, and slag-making deoxidizer; the auxiliary materials in the original bag (8) are classified and recycled according to the requirements of the production plant.

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