A high-temperature slag multiphase jet compound granulation powder making method

A slag, high temperature technology, applied in the field of new high-temperature slag multiphase jet composite granulation and milling, can solve the problems of difficult processing, poor stability, low granulation and milling efficiency, and achieve the effect of concise and clear thinking

Active Publication Date: 2021-05-14
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to solve the problems of difficult processing of molten slag after cold agglomeration, low efficiency of granulation and milling, poor stability and low utilization rate, and to provide a high-temperature slag multiphase jet compound granulation milling method, which The content of the method covers high-temperature slag, multi-phase jet spraying-hot rolling crushing-atmosphere ball milling, sorting, storage and transportation, waste heat utilization, environmental protection, development and application, etc.; the core key process of the invention lies in multi-phase jet spraying-thermal Rolling and crushing-atmosphere ball milling integration

Method used

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  • A high-temperature slag multiphase jet compound granulation powder making method
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  • A high-temperature slag multiphase jet compound granulation powder making method

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Embodiment 1

[0037] A multi-phase jet compound granulation milling method for converter steelmaking high-temperature slag, specifically comprising the following steps:

[0038] (1) Pretreatment of high-temperature slag from converter steelmaking: make the superheat △T of high-temperature slag from converter steelmaking 50°C~100°C, viscosity 0.04 Pa·s~0.3Pa·s; for SiO 2 .

[0039] (2) The pretreated high-temperature slag is transported to the ladle, and the high-temperature slag is sprayed into the granulation bin by multi-phase jet spraying technology. The bottom of the granulation bin is equipped with multiple side-by-side troughs. After solidification Due to the different particle sizes, the high-temperature slag particles fall into different troughs. The slag particles coming out of the trough are hot-rolled and pulverized, and the slag particles in the trough near the side of the multi-phase jet spraying device are first heated. Rolling and crushing, and then roller crushing, the sla...

Embodiment 2

[0045] A multi-phase jet compound granulation powder-making method for high-temperature slag of copper smelting in an Isa furnace, specifically comprising the following steps:

[0046] (1) Pretreatment of the high-temperature slag of copper smelting in the Isa furnace: make the superheat △T of the slag 50°C~150°C, and the viscosity 0.05Pa·s~0.5Pa·s; the conditioner used for tempering is SiO 2 , Pulverized coal.

[0047] (2) The pretreated high-temperature slag is transported to the ladle, and the high-temperature slag is sprayed into the granulation bin by multi-phase jet spraying technology. The bottom of the granulation bin is equipped with multiple side-by-side troughs. After solidification Due to the different particle sizes, the high-temperature slag particles fall into different troughs. The slag particles coming out of the trough are hot-rolled and pulverized, and the slag particles in the trough near the side of the multi-phase jet spraying device are first heated. Ro...

Embodiment 3

[0053] A multi-phase jet compound granulation powder-making method for high-temperature slag of Osmelt furnace tin smelting, specifically comprising the following steps:

[0054] (1) Pretreatment of high-temperature slag from tin smelting in Osmelt furnace: make the superheat △T of slag 50°C~200°C, viscosity 0.04Pa·s~0.3Pa·s; conditioning agent used for tempering for SiO 2 .

[0055] (2) The pretreated high-temperature slag is transported to the ladle, and the high-temperature slag is sprayed into the granulation bin by multi-phase jet spraying technology. The bottom of the granulation bin is equipped with multiple side-by-side troughs. After solidification Due to the different particle sizes, the high-temperature slag particles fall into different troughs. The slag particles coming out of the trough are hot-rolled and pulverized, and the slag particles in the trough near the side of the multi-phase jet spraying device are first heated. Rolling and crushing, and then roller ...

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Abstract

The invention discloses a high-temperature molten slag multiphase jet composite granulation milling method, which belongs to the technical field of solid waste comprehensive utilization. The invention solves the problems of difficult treatment after cold agglomeration of high-temperature slag, low efficiency of granulation and pulverization, poor stability and low utilization rate, and provides a relatively complete set of green, scientific and efficient multi-phase high-temperature slag Jet compound granulation milling method system, including three processes of multi-phase jet spraying - hot rolling hot crushing - quenched and tempered atmosphere grinding, which are seamlessly combined and integrated; at the same time, the granulation milling technology of high temperature slag is integrated The slag stabilization technology and the slag conditioning and modification technology are properly integrated into the process; the resource utilization rate of the main process parameters is 100%, the actual solid waste comprehensive utilization rate is over 90%, and the three wastes realize green discharge. The above method can be popularized and applied in metallurgy, chemical industry, energy, material, environmental protection and other industries.

Description

technical field [0001] The invention relates to a novel high-temperature molten slag multiphase jet compound granulation powder-making method, which belongs to the technical field of solid waste comprehensive utilization. Background technique [0002] High-temperature slag is high-temperature slag produced in metallurgical, chemical and other production processes. It has a large amount and contains high heat energy. For example, 0.3-0.4 t of blast furnace slag is produced per ton of pig iron, and 0.08-0.12 t of converter slag is produced per ton of steel. Each ton of crude copper Isa furnace produces about 4 tons of slag, and one ton of crude tin Osmet furnace produces about 0.5 ton of tin-rich slag, and one ton of slag contains about 50-70 Kg of standard coal. At present, the main treatment of slag at home and abroad is water quenching. Therefore, there are three problems, 1) a large amount of water is wasted, and a large amount of harmful gas and liquid can also be produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/06C21B3/08C04B5/02
CPCC04B5/00C21B3/06C21B3/08Y02W30/50Y02P10/122Y02P10/20
Inventor 胡建红杜茂华马丽萍张德华胡建杭冯晶陈樑宋鹏徐晓军王向宇董占能周立荣章全奎周旭昌潘正波王延军黄小凤于洁朱文杰陆玉江代敬文周利罗闻俊飞李启正周晓龙刘满门霍光李永良李雪峰舒宏富张小文胡明钰刘学锋
Owner KUNMING UNIV OF SCI & TECH
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