Comprehensive utilization method of pyrite concentrate and high-sulfur coal

A technology for sulfur concentrate and high-sulfur coal, which is applied in the fields of sulfur compounds, chemical instruments and methods, and sulfur preparation/purification, etc., can solve the problems of waste tailings, waste of resources, increase the cost of coal enterprises, etc., and achieve economic benefits. Good and energy saving effect

Inactive Publication Date: 2016-10-12
刘松
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-ferrous metal smelting enterprises only pay attention to the acquisition of target metals, and discard the tailings, resulting in waste of resources
[0003] High-sulfur coal refers to coal with a sulfur content > 3%. my country’s coal resources rank second in the world, but the per capita exploitable amount is only 52 tons (the world’s per capita share is 173 tons), of which ...

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
  • Comprehensive utilization method of pyrite concentrate and high-sulfur coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] see figure 1 Summary of the invention: the present invention is a kind of comprehensive utilization method of sulfur fine sand and high-sulfur coal, and its purpose is to utilize sulfur fine sand and high-sulfur coal to prepare sulfur, sulfuric acid and high-quality ironmaking raw materials (sintered iron balls).

[0019] Technical solution of the present invention comprises following processing step:

[0020] 1. Sulfur concentrate is fed, transported, and dehydrated by a dryer to form dry powder sulfur concentrate.

[0021] 2. The dry powder sulfur concentrate is sent to the dry powder silo by the bucket elevator.

[0022] 3. The outlet of the silo is sent to the thermal distillation reactor by a speed-regulating screw conveyor.

[0023] 4. The thermal distillation reactor reacts and distills gaseous sulfur at a temperature of 700-900°C and condenses it into liquid sulfur through a liquid sulfur condenser.

[0024] 5. The liquid sulfur is refined by a special liquid...

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 comprehensive utilization method of pyrite concentrate and high-sulfur coal. With pyrite concentrate as a raw material, the method comprises the following steps: extracting sulfur from pyrite concentrate by a thermal distillation process to prepare sulfur S; further desulfurizing the slag after the sulfur extraction by a boiling process to obtain SO2 gas; preparing sulfuric acid from the SO2 gas; and finally, with the desulfurized slag and high-sulfur coal as raw materials and in the presence of flux, sintering to obtain a sintered iron ball. The method turns waste into wealth and realizes mass-energy balance with the most economical technology and has a broad application prospect.

Description

technical field [0001] The invention relates to a treatment method for industrial waste, in particular to a comprehensive utilization method for sulfur fine sand and high-sulfur coal, which belongs to the technical field of environmental protection. Background technique [0002] With the rapid development of non-ferrous smelting in my country, the mining volume of non-ferrous metal copper, aluminum, zinc and other ores is increasing, and the accumulation of tailings after ore dressing is also increasing, which not only occupies land, but also pollutes the environment. Tailings contain iron disulfide (FeS 2 ), commonly known as sulfur concentrate, is the raw material for sulfur and iron smelting after re-election. However, non-ferrous metal smelting enterprises only pay attention to the acquisition of target metals, and discard the tailings, resulting in waste of resources. [0003] High-sulfur coal refers to coal with a sulfur content > 3%. my country’s coal resources r...

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
IPC IPC(8): C01B17/06C01B17/74C22B1/22
CPCY02P20/129C01B17/06C01B17/74C22B1/22
Inventor 刘松刘凡详
Owner 刘松
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap