Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for simultaneously extracting iron element and silicon element in solid wastes by using superconducting magnetic separating device

A separation device and superconducting magnetic technology, applied in the field of environmental protection and resources, to achieve the effect of wide application prospects, environmental friendliness, and small footprint

Active Publication Date: 2013-04-24
UNIV OF SCI & TECH BEIJING
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the existing process route that exists in the middle of the calcining acid leaching method for the production of silicon dioxide from non-metallic ores and silicon-containing tailings as raw materials long, high energy consumption, difficult to master the process, etc., to provide a method of reusing solid waste, which can not only solve the problem of land occupation and environmental pollution caused by solid waste discharge, but also can be used as a secondary resource to regenerate use to obtain certain economic benefits

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for simultaneously extracting iron element and silicon element in solid wastes by using superconducting magnetic separating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 50-150g / L of solid waste particles to be treated into water, add 10-50mg / L of MD-004 agent, and keep stirring until the particles are fully separated in water, and set aside for later use;

[0019] Step 2: Set the magnetic field gradient to 1T, use an air pump to control the flow rate of the above mixed solution at 500-3000ml / min through the superconducting high-gradient magnetic separation system, take the steel wool adsorbate and the separated solution after passing through, and pass the component analysis , the iron content in the adsorbate reaches 10%-17%, and the silicon content is 25%-30%.

Embodiment 2

[0021] Add 50-150g / L of solid waste particles to be treated into water, add 10-50mg / L of MD-004 agent, and keep stirring until the particles are fully separated in water, and set aside for later use;

[0022] Step 2: Set the magnetic field gradient to 3T, and use an air pump to control the flow rate of the above mixed solution at 500-3000ml / min through the superconducting high-gradient magnetic separation system. After all passes, take the steel wool adsorbate and the separated solution, and pass the component analysis. , the iron content of the iron-containing substance TFe is ≥ 15%, the best is more than 60%; the silicon content in the extract is greater than 25%, the best SiO 2 The content reaches more than 99%.

[0023] Table 1 Initial composition of substances to be treated

[0024] Composition content,% Composition content,% SiO 2 ≥50 ( Na 2 o ≤1 Fe 2 o 3 ≥5 (more than 10% is better) SO 3 ≤1 MgO ～5-20 P 2 o 5 ≤1 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for simultaneously extracting an iron element and a silicon element in solid wastes by using a superconducting magnetic separating device, belonging to the field of resource and environment. The method is characterized by comprising the following steps of: adding MD-004 and PFASSB reagents by using magnetic differences of different valuable substances in the solid wastes, using a superconducting high-gradient magnetic separating device and making the best of a magnetic flocculation strengthening or weakening mechanism, and separating and recovering valuable substances through the parameter control. Aiming at the solid wastes with higher silicon and iron contents, the self-developed superconducting high-gradient magnetic separating device is applied to separating and extracting ferric oxide and realizing separating and extracting silicon dioxide simultaneously, so that the valuable elements in the solid wastes are furthest recycled. The technology processes and reuses the wastes in process of obtaining economic benefit, thereby being free from secondary pollution and friendly to the environment. In addition, the technology saves investment, and is convenient to operate, small in floor area, low in operation cost, and wide in application foreground.

Description

Technical field: [0001] The present invention belongs to the field of resources and environmental protection. It uses self-developed superconducting HGMS (high gradient magnetic separation) separation system and special magnetic flocculation mechanism to effectively remove silicon dioxide and iron oxide in solid waste (especially tailings). Simultaneous separation and extraction of valuable substances to realize the harmless and resourceful utilization of waste resources. Background technique: [0002] High Gradient Magnetic Separation (HGMS) is a physical separation method. This technology uses the magnetic gathering medium to provide greater magnetic force to generate a high gradient magnetic field (even up to 10T or more), and uses its special magnetic flocculation mechanism to separate solids. Separation and extraction of weak magnetic (or non-magnetic) fine particles in waste to realize harmless and resourceful utilization of waste. [0003] At present, magnetic sepa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12
Inventor 李素芹钱鑫熊国宏胡彬彬
Owner UNIV OF SCI & TECH BEIJING