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

Method for preparing iron ore concentrate and manganese chemical products by carrying out dual reduction on refractory ferro-manganese symbiotic lean ore

A technology for chemical products and iron concentrates, applied in chemical instruments and methods, improvement of process efficiency, solid separation, etc., can solve problems such as processing and utilization, achieve high efficiency, low cost, and improve the recovery rate of concentrates

Inactive Publication Date: 2012-04-18
云南德宁生物化工研究有限公司 +2
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the ferro-manganese symbiotic ores, few symbiotic ores containing more than 20% iron and manganese can be directly smelted to produce iron-manganese alloys, while most of the symbiotic lean ores containing less than 20% iron and manganese cannot be processed by traditional beneficiation methods. , smelting and chemical treatment and utilization

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Example 1: Iron concentrate and manganese sulfate produced from iron-manganese symbiotic lean ore in Qujing, Yunnan.

[0021] 1. Analysis of main components of raw materials:

[0022] element Al Ca Fe Mg mn Pb Cu Si content(%) 8.31 8.23 18.11 8.13 15.61 0.12 0.01 10.31

[0023] Second, the main process:

[0024] Material grinding, material mixing, reduction reaction, closed cooling, two-stage wet strong magnetic separation, sulfuric acid manganese leaching of tailings, purification and removal of impurities, concentration and crystallization.

[0025] Three, the main process conditions:

[0026] 1. Material grinding:

[0027] (1) Dry grinding.

[0028] (2) Iron-manganese ore-120 mesh ≥ 95%, limestone-120 mesh ≥ 95% (chaff does not need to be ground).

[0029] 2. Restoration conditions:

[0030] (1) Material ratio: ore: chaff: limestone = 1:0.15:0.008.

[0031] (2) Reduction temperature: 500°C±10°C.

[0032] (3) Reduction...

example 2

[0057] Example 2: Double reduction separation of iron and manganese symbiotic lean ore in Honghe area, Yunnan to produce iron concentrate and manganese carbonate.

[0058] 1. Analysis of main components of raw materials:

[0059] element Al Ca Fe Mg mn Pb W Si content(%) 2.14 10.83 17.89 6.31 16.31 0.03 2.32 13.42

[0060] Second, the main process:

[0061] Material grinding, material mixing, reduction reaction, closed cooling, two-stage wet strong magnetic separation, sulfuric acid manganese leaching of tailings, purification and impurity removal, carbonization manganese precipitation, dry packaging.

[0062] Three, the main process conditions:

[0063] 1. Material grinding:

[0064] (1) Dry grinding.

[0065] (2) Iron-manganese ore-120 mesh ≥ 95%, limestone-120 mesh ≥ 95%.

[0066] (3) Tobacco rod-L0.2~0.4mm≥95%.

[0067] 2. Restoration conditions:

[0068] (1) Ratio of materials: ore: tobacco rod powder: limestone = 1:0.2:0.006....

example 3

[0097] Example 3: Double reduction separation of iron and manganese symbiotic lean ore in Dali, Yunnan to produce iron concentrate and manganese dioxide.

[0098] 1. Analysis of main components of raw materials:

[0099] element Al Ca Fe Mg mn Pb Cu Si content(%) 4.36 6.18 18.81 8.44 17.88 0.011 0.031 12.13

[0100] Second, the main process:

[0101] Material grinding, material mixing, reduction reaction, closed cooling, two-stage wet strong magnetic separation, sulfuric acid manganese leaching of tailings, purification and impurity removal, carbonization manganese precipitation, air heat drying, and medium temperature pyrolysis.

[0102] Three, the main process conditions:

[0103] 1. Material grinding:

[0104] (1) Dry grinding.

[0105] (2) Iron-manganese ore and limestone-120 mesh ≥ 95%, (sawdust does not need to be ground).

[0106] 2. Restoration conditions:

[0107] (1) Ratio of materials: ore: sawdust: limestone = 1:0.20:...

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 belongs to a refractory symbiotic ore biochemical and chemical metallurgical technology, in particular relates to a method for carrying out comprehensive treatment on the refractory symbiotic ore with ferric content and manganese content of being less than 20wt%. The method provided by the invention comprises the following technological steps of: with cellulose-containing plant waste as a reducing agent and limestone as an active agent, respectively smashing the reducing agent, the active agent and the ferro-manganese symbiotic lean ore with the ferric content and the manganese content of being less than 20wt%, burdening and uniformly mixing according to calculated quantity of complete reaction, heating and carrying out reduction reaction to obtain magnetic Fe3O4, Fe0 and acid soluble MnO, carrying out magnetic separation to obtain iron ore concentrate with the ferric content of being more than 60wt% and manganese enriched tailings, and leaching the manganese enriched tailings with sulfuric acid or hydrochloric acid, purifying, concentrating and crystallizing to directly prepare manganese sulfate, or tetrahydrate manganese chloride or anhydrous manganese chloride product; and transforming to prepare manganese chemical products such as manganese carbonate, manganese dioxide and manganese monoxide. The method provided by the invention has the advantages of simple and feasible process, low cost and high recovery rate, and the problem of resource utilization of refractory ferro-manganese symbiotic lean ore can be better solved.

Description

technical field [0001] The invention belongs to a biochemical and chemical metallurgy technology for refractory symbiotic ores, and specifically relates to a method for comprehensively treating refractory symbiotic lean ores containing less than 20 wt% of iron and manganese. Background technique [0002] China's iron ore resources are low, and the per capita reserves are less than 25% of the world's average level. Among them, lean ore accounts for 94.3% of the total reserves, and rich ore only accounts for 5.7%. Magnetite, which is easy to sort in lean ore reserves, accounts for 68%, and hematite, which is difficult to be enriched by traditional techniques, accounts for 68%. [0003] 32%. Although my country's manganese ore resources are abundant, they are dominated by lean ores and few rich ores. The average grade of manganese in the national manganese ore is only 21%, and the proven resources of lean ore with medium grade and below are 754 million tons, accounting for mo...

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): C22B1/02B03C1/02C22B3/08C22B3/44C22B47/00
CPCY02P10/20
Inventor 戴元宁李学军李海燕邱宏达
Owner 云南德宁生物化工研究有限公司
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