Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Comprehensive processing method of high phosphorus-sulfur siderite

A comprehensive treatment and grinding technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of difficult iron ore resources, contradiction between supply and demand, poor dephosphorization effect and dephosphorization effect, etc. The effect of high, simple process and low production cost

Inactive Publication Date: 2010-10-20
KUNMING IRON & STEEL HLDG CO LTD
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the method provided by this patent application to treat high-phosphorus siderite, the dephosphorization effect of roasting first is worse than that of reverse flotation
[0004] At present, the domestic method of processing siderite mainly adopts the process of first roasting and then magnetic separation, such as Daxigou, Shaanxi. When this single treatment method is used to process siderite with high impurities such as sulfur and phosphorus, the product quality is difficult to reach It is not conducive to the full utilization of resources, and it is even more difficult to solve the current contradiction between supply and demand of iron ore resources

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 processing method of high phosphorus-sulfur siderite
  • Comprehensive processing method of high phosphorus-sulfur siderite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. The raw ore containing 30.82% iron, 1.06% phosphorus, and 1.30% sulfur is crushed and ground to a fine ore of -320 mesh, accounting for more than 90% of the mass ratio;

[0028] 2. Adjust the pH value of the ore grinding in step 1 to 5, the temperature is 28°C, add xanthate at an amount of 350g / ton of ore, add 2# oil at an amount of 45g / ton of ore, perform a reverse flotation desulfurization, and collect sulfur-containing foam ;

[0029] 3. Add xanthate in the amount of 100g / ton of ore to the bottom flow remaining in the above 2 steps, and add 2# oil in the amount of 30g / ton of ore, perform secondary reverse flotation desulfurization, and collect sulfur-containing foam;

[0030] 4. Adjust the pH value of the underflow in the above 3 steps to 11, the temperature is 28°C, and add 800g / ton of fatty acid ore, 1650g / ton of water glass, 280g / ton of starch, and 150g / ton of alkali lignin, and perform a reaction Flotation dephosphorization, collecting phosphorus-containing f...

Embodiment 2

[0036] 1. The raw ore containing 31.53% iron, 1.04% phosphorus, and 1.29% sulfur is crushed and ground to a fine ore of -320 mesh, accounting for more than 90% of the mass ratio;

[0037] 2. Adjust the pH value of the ore grinding in step 1 to 4, the temperature is 25°C, add xanthate at an amount of 300g / ton of ore, add 2# oil at an amount of 40g / ton of ore, perform a reverse flotation desulfurization, and collect sulfur-containing foam ;

[0038] 3. Add xanthate in the amount of 50g / ton of ore to the underflow remaining in the above-mentioned 2 steps, and add 2# oil in the amount of 20g / ton of ore, perform secondary reverse flotation desulfurization, and collect sulfur-containing foam;

[0039] 4. Adjust the pH value of the underflow in the above 3 steps to 9, the temperature is 25°C, and add fatty acid 600g / ton ore, water glass 1500g / ton ore, starch 200g / ton ore, alkali lignin 100g / ton ore, and perform a reaction Flotation dephosphorization, collecting phosphorus-containing...

Embodiment 3

[0045] 1. The raw ore containing 32.23% iron, 1.09% phosphorus, and 1.32% sulfur is crushed and ground to a fine ore of -320 mesh, accounting for more than 90% of the mass ratio;

[0046] 2. Adjust the pH value of the ore grinding in step 1 to 6, the temperature is 35°C, add xanthate at an amount of 400g / ton of ore, add 2# oil at an amount of 50g / ton of ore, perform a reverse flotation desulfurization, and collect sulfur-containing foam ;

[0047] 3. Add xanthate in the amount of 150g / ton of ore to the underflow remaining in the above 2 steps, and add 2# oil in the amount of 50g / ton of ore, perform secondary reverse flotation desulfurization, and collect sulfur-containing foam;

[0048] 4. Adjust the pH value of the underflow in the above 3 steps to 12, the temperature is 35°C, and add fatty acid 1000g / ton ore, water glass 1750g / ton ore, starch 350g / ton ore, alkali lignin 200g / ton ore, and perform a reaction Flotation dephosphorization, collecting phosphorus-containing foam; ...

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 provides a comprehensive processing method of high phosphorus-sulfur siderite, which is characterized in that high-quality iron ore concentrate with grade of iron reaching more than 60 percent and recycling rate of iron reaching more than 70 percent is obtained through ore grinding, reverse-floatation desulphurization, reverse-floatation dephosphorization, scavenging dephosphorization, reduction roasting and ore grinding and low-intensity magnetic separation; moreover, the iron ore concentrate contains less than 0.08 percent phosphorous, less than 0.30 percent sulfur and less than 8 percent silicone, so the high phosphorus-sulfur siderite resource is reasonably utilized, and the problem of the contradiction of the supply and the demand of the iron ore resource can be thoroughly solved. The method is free from discharging any waste, the floated filter liquid is completely returned to be recycled in the process procedures, the floated sulfur-contained and phosphorous-contained foam is processed after being recycled to become valuables; therefore, the process is simple and convenient, the production cost is low, and the selection quality is high.

Description

technical field [0001] The invention relates to a processing method for siderite, in particular to a comprehensive processing method for high-phosphorus-sulfur siderite, which belongs to the technical field of mineral processing. Background technique [0002] For siderite with high impurity content such as phosphorus and sulfur, there are many domestic and foreign experiments and researches, but few cases of development and utilization, the main reason is that the beneficiation index is not ideal and the cost is too high. For example, after flotation of high phosphorus and sulfur siderite with a single flotation process, although there is a certain effect, the grade of iron concentrate is low, only 32-37%, and the recovery rate is 33-45%. The content of sulfur, phosphorus and silicon in the ore is relatively high, which is extremely unfavorable for blast furnace smelting. [0003] In 2008, a Chinese patent disclosed a patent application called "Low-grade and complex iron or...

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): B03B7/00B03D1/02B03B1/00B03B1/04B03D103/02
Inventor 张竹明张文彬罗明发文书明叶亚雄刘殿文雷云栗伟唐美锡祝强官金莲
Owner KUNMING IRON & STEEL HLDG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com