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Resourceful treatment system for recycling iron from steel slag and grinding

A steel slag recycling and processing system technology, applied in the field of building materials metallurgy, can solve the problems of high metal iron content, limited drying heat source, poor grindability, etc., achieve full combustion, increase dispersion, and reduce the risk of flame backfire Effect

Pending Publication Date: 2021-05-11
TIANJIN CEMENT IND DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, based on the existing problems of high iron content in steel slag, poor grindability, and limited drying heat source, a method for recycling metal iron and iron in steel slag, reducing energy consumption of steel slag grinding, and promoting the recycling of steel slag solid waste is provided. Steel slag recycling iron and grinding resource treatment system has important practical significance

Method used

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  • Resourceful treatment system for recycling iron from steel slag and grinding
  • Resourceful treatment system for recycling iron from steel slag and grinding
  • Resourceful treatment system for recycling iron from steel slag and grinding

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A steel slag recycling iron and grinding recycling processing system, said steel slag recycling iron and grinding recycling processing system includes: raw material storage, jaw crusher, roller crusher, broadband magnetic separator, wet beneficiation Ball mill, magnetic drum, filter press, dry ball mill, dust collector A, steel slag tailings warehouse, vertical mill, dust collector B, finished product warehouse; the raw material warehouse, jaw crusher, roller crusher, Broadband magnetic separator, wet-process beneficiation ball mill, magnetic drum, filter press, dry-process ball mill, dust collector A and finished product storehouse are connected sequentially, said broadband magnetic separator, steel slag tailing storeroom, vertical mill, dust collector B. Finished product warehouses are connected sequentially.

[0044] Furthermore, it can also be considered in the embodiments that the particle size after crushing by the jaw crusher is ≤30 mm, and the particle size afte...

Embodiment 2

[0052] The heating system of the vertical mill adopts a biomass burning furnace. The biomass burning furnace includes a walking grate bed structure of the biomass burning furnace, and the walking grate bed structure of the biomass burning furnace is arranged in the biomass burning furnace, and the walking grate bed structure includes a driving device and several The traveling grate plate is arranged in parallel, the driving device drives the traveling grate plate to reciprocate along its central axis, and the traveling grate plate moves to the slagging outlet of the biomass combustion furnace and retreats in batches, and the receding The traveling grates are separated by at least one traveling grate.

[0053] The driving device is a hydraulic cylinder, the pull rod of the hydraulic cylinder is fixed to the traveling grate plate, the hydraulic cylinder is installed under the traveling grate plate, the hydraulic cylinder has an accumulator, and the traveling grate plate The hea...

Embodiment 3

[0055] The heating system of the vertical mill adopts a biomass burning furnace. The biomass combustion furnace also includes a safety brake structure for the biomass combustion furnace. The biomass combustion furnace is fed through a conveying reamer, and a steady flow bin is provided at the feed port of the conveying reamer. The conveying hinge A river sand storage tank and an air cannon are installed between the steady flow bin and the biomass burning furnace, and a pneumatic gate valve is installed on the pipeline between the river sand storage tank and the conveying reamer, and the river sand storage tank Located above the pneumatic gate valve, the interior is filled with river sand. When the pneumatic gate valve is opened, the river sand will automatically flow out from the river sand storage tank.

[0056] The capacity of the river sand storage tank is 0.5-1m 3 , the river sand particle size is 0.075-2.36mm; the working pressure of the air cannon is 0.4-1.0MPa, and the...

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Abstract

The invention belongs to the technical field of building material metallurgy, and particularly relates to a resourceful treatment system for recycling iron from steel slag and grinding. The resourceful treatment system for recycling iron from steel slag and grinding comprises a raw material warehouse, a jaw crusher, a double-roller crusher, a broadband magnetic separator, a wet-process selection ball mill, a magnetic drum, a filter press, a dry-process ball mill, a dust collector A, a steel slag tailing warehouse, a vertical mill, a dust collector B and a finished product warehouse, wherein the raw material warehouse, the jaw crusher, the double-roller crusher, the broadband magnetic separator, the wet-process selection ball mill, the magnetic drum, the filter press, the dry-process ball mill, the dust collector A and the finished product warehouse are connected in sequence, and the broadband magnetic separator, the steel slag tailing warehouse, the vertical mill, the dust collector B and the finished product warehouse are connected in sequence. The resourceful treatment system for recycling iron from steel slag and grinding is used for recycling metal iron in steel slag, reducing the energy consumption of steel slag grinding and promoting the recycling of steel slag solid waste.

Description

technical field [0001] The invention belongs to the technical field of building material metallurgy, and in particular relates to a steel slag recycling iron and grinding recycling treatment system. Background technique [0002] Existing techniques and drawbacks: [0003] Steel slag is a by-product of the steelmaking process, accounting for 10% to 15% of crude steel output. The composition of steel slag is complex and changeable, the main reason is that the furnace type of steelmaking furnace is different and the steelmaking process is different, even the chemical composition of steel slag from different furnaces in the same steelmaking plant is also very different. The main chemical components of steel slag are CaO, SiO 2 、Al 2 o 3 , FeO, Fe 2 o 3 , MgO, TiO 2 、K 2 O, Na 2 O, SO 3 , Cl, MnO, P 2 o 5 Wait. The main mineral in steel slag is tricalcium silicate (C 3 S), dicalcium silicate (C 2 S), dicalcium ferrite (C 2 F), fayalite (CFS), RO phase (Mg 2+ , Fe...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/00B02C23/02B02C23/08B02C23/16B30B9/02F26B21/00F26B21/02C21B3/04
CPCB02C21/00B02C23/08B30B9/02F26B21/001F26B21/02B02C23/16B02C23/02B02C23/00C21B3/04Y02W30/50Y02P10/20
Inventor 杜鑫聂文海徐达融王维莉豆海建
Owner TIANJIN CEMENT IND DESIGN & RES INST
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