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Vertical mill grinding steel slag and lithium slag composite powder production method

A production method and vertical mill technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems such as the undiscovered vertical mill compound grinding process, and achieve the improvement of activity index and simplification Production process, the effect of improving strength

Inactive Publication Date: 2016-11-16
JIANGSU RONGDA NEW MATERIAL
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  • Claims
  • Application Information

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Problems solved by technology

[0008] After retrieving relevant literature, there is already a technology for recycling steel slag powder and lithium slag powder, but no technology has been found to use a vertical mill to grind steel slag powder and lithium slag powder. Therefore, a new type of vertical mill is developed. The production method of grinding steel slag and lithium slag composite powder is imperative

Method used

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  • Vertical mill grinding steel slag and lithium slag composite powder production method
  • Vertical mill grinding steel slag and lithium slag composite powder production method
  • Vertical mill grinding steel slag and lithium slag composite powder production method

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Embodiment Construction

[0028] In the production method of vertical mill grinding steel slag and lithium slag composite powder of the present invention, at first steel slag needs to be pretreated:

[0029] (1) Steel slag processing metal recovery treatment: such as figure 1 As shown, including steel slag crushing, iron removal pretreatment closed-circuit cycle process, steel slag pre-grinding, magnetic separation and iron removal closed-circuit cycle process;

[0030] In the steel slag crushing and metal removal pretreatment closed-circuit circulation process, the steel slag is first screened by the hydraulic tilting screen. The sieve hole diameter of the hydraulic tilting screen is 200mm. The amount is stably transported to the No. 1 belt conveyor, and then sent to the hydraulic jaw crusher for crushing through the No. 2 belt conveyor. The output particle size is controlled to be ≤ 40mm. The crushed steel slag is sent to the storage material through the No. 3 belt conveyor bin; the screened steel s...

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Abstract

The invention relates to a vertical mill grinding steel slag and lithium slag composite powder production method. The method is characterized by including the step that mixed slag is prepared, wherein steel slag and lithium slag are mixed according to the weight ratio of (9-6):(1-4) through respective quantitative feeders and then enter a spiral conveying machine, and then the mixed slag is conveyed to a vertical mill through the spiral conveying machine to be directly ground. Steel slag and lithium slag composite powder prepared through the method is high in activity index and small in energy consumption, and resources are fully used.

Description

technical field [0001] The invention relates to a production method for grinding steel slag and lithium slag composite powder by a vertical mill. Background technique [0002] With the rapid development of my country's economy, environmental and resource issues are becoming the bottleneck restricting my country's economic development. Taking the road of sustainable development is an important strategy for my country's future long-term development. The deep comprehensive utilization of industrial waste is one of the cores of sustainable development. Steel slag is the solid waste produced by steelmaking electric furnace and converter steelmaking. Japan, Germany, the United States and other developed countries have used it as early as 80 years ago, basically reaching 100%. [0003] my country is a big country in steel production, accounting for nearly 50% of the world's total. Therefore, my country is also a big country in steel slag production, with an annual production of 93...

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Application Information

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IPC IPC(8): C04B20/02C04B18/14
CPCC04B20/026C04B40/0046C04B18/142C04B18/144C04B20/0016Y02W30/91
Inventor 张贤清
Owner JIANGSU RONGDA NEW MATERIAL