Metallurgy waste residue resource comprehensive recovering method

A recycling method and metallurgical slag technology, which can be used in applications, household utensils, clay products, etc., and can solve the problem of low added value

Inactive Publication Date: 2019-04-23
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, steel slag is mainly used in the cement industry with low added value

Method used

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  • Metallurgy waste residue resource comprehensive recovering method
  • Metallurgy waste residue resource comprehensive recovering method
  • Metallurgy waste residue resource comprehensive recovering method

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Embodiment Construction

[0026] A method for comprehensive recovery of metallurgical slag resources, comprising the following steps in sequence:

[0027] A. Preparation of the metallurgical slag conditioner: Grind the melting point agent and the viscosity agent into powders, and mix evenly to obtain the metallurgical slag conditioner. The formula of metallurgical slag conditioner is shown in Table 1.

[0028]

[0029] B. Add the metallurgical slag conditioner to the metallurgical slag just out of the furnace, stir evenly, pour it into the atomizer, and use high-speed fluid to atomize the metallurgical slag into ultra-fine metallurgical slag particles. Separation equipment is used to separate the metallurgical slag particles from the fluid, and the high-iron particles and low-iron particles in the metallurgical slag particles are separated by gravity and magnetic separation. See Table 2 for the relationship between high-speed fluid velocity and particle size of metallurgical slag.

[0030]

[0...

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Abstract

The invention discloses a metallurgy waste residue resource comprehensive recovering method. The method comprises the following steps: grinding a melting point agent and a viscosity agent to be powder, uniformly mixing, to obtain a metallurgy waste residue texturizing agent; adding the metallurgy waste residue texturizing agent to an oven-fresh metallurgy waste residue, after uniformly stirring, pouring into an atomizer, and atomizing the metallurgy waste residue as ultramicro metallurgy waste residue particles by using high-speed fluid; separating the metallurgy waste residue particles and the fluid, through reselection and magnetic separation, separating high iron particles and low iron particles in the metallurgy waste residue particles; adding a mesoporous agent and a microporous agentto the low iron particles, uniformly mixing, pouring into a mould for forming, placing in a kiln for drying, after calcining, to obtain a heat-preserving wall material; and coating on the surface ofthe heat-preserving wall material by an enamel material. Compared with a current technical scheme, the method has the characteristics of low production cost, comprehensive resource utilization, and ahigh product added value.

Description

technical field [0001] The invention relates to the treatment of metallurgical slag, especially the treatment method of steel slag. The steel slag is industrial waste slag produced in the steelmaking process and can also be used for the treatment of iron-making blast furnace slag, lead-making lead slag and other molten metallurgical slag. Background technique [0002] China is a major producer of steel in the world, ranking first in the world for more than 10 years, and its output is increasing year by year. In 2012, the steel output has exceeded 700 million tons. In the steelmaking process, steel slag is a by-product of steelmaking production, and 80-150kg of steel slag is produced per ton of steel; if the slag production per ton of steel is calculated as 120kg, the total annual production of steel slag in China can reach more than 90 million tons. Steel slag is made of CaO, MgO, FeO, MnO, SiO 2 、Al 2 o 3 , FeS and other mineral components, the composite oxides formed d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138C04B38/06C04B41/86
CPCC04B33/138C04B38/0665C04B41/009C04B41/5022C04B41/86Y02P40/60
Inventor 谭宏斌马小玲董发勤
Owner SOUTHWEAT UNIV OF SCI & TECH
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