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

Method for arsenic removal and phosphorous removal out of iron-containing materials

A technology of iron-containing raw materials and concentrated alkali, which is applied in the direction of improving process efficiency and can solve problems such as high cost and long duration

Inactive Publication Date: 2011-01-26
顿涅茨克钢铁制品私营股份公司
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, this prior art method, first of all, can only be used for sulfide ores with residual 0.22%-1.5% arsenic in the leaching raw material, while the content of sulfide ores, for example in iron-bearing ores, will not More than 0.1%-0.2%; Second, under the high solid phase to liquid ratio S:L, the consumption of alkali reaches 20% of the ore weight; Third, the process lasts for a long time, and the iron-containing raw materials are treated with alkali The iron content in will not increase; and the cost is high

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 arsenic removal and phosphorous removal out of iron-containing materials
  • Method for arsenic removal and phosphorous removal out of iron-containing materials
  • Method for arsenic removal and phosphorous removal out of iron-containing materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1160g of pre-reduced iron ore pellets were divided into the following particles:

[0034] 221 g of Particle 1 (-0.25 mm), containing (wt%): (Fe+Mn) = 94.8; CaO·SiO2 = 4.2; V = 0.15; Y = 0.17; As = 0.15.

[0035] 519g particle 2 (-0.25mm+0.08mm), comprising (wt%): (Fe+Mn)=61.4; CaO·SiO2=3.7; SiO2=8.1; Al2O3=5.4; V=0.05; Y=0.07; Ni= 0.11; As=0.22; Zr=0.05.

[0036] 420 g of particle 3 (-0.08 mm), ie waste, contained (wt%): (Fe+Mn) = 12.7; As = 0.35, same silicate and coke.

[0037] 519g particle 2 is transferred to steel ball mill, in steel ball mill, add 248g NaCl, 770g water and 3g caustic soda (sodium hydroxide) to solution pH=12 (solid phase and liquid ratio S: L=1: 1, the NaCl concentration is 24.36wt%), then ground for about 2h; the suspension obtained is separated from the pulverizer and filtered to a humidity of 30.4wt%; the filter residue is washed with 158g of NaCl solution with a concentration of 24.36wt% (NaCl The amount of the solution is equal to the wate...

Embodiment 2

[0040] 1000 g of iron-containing pellets were transferred to a steel ball mill. Dissolve 250g NaCl in 1000g water. In the obtained 20% NaCl solution, 5 g of NaOH was added to make pH=12. NaCl lye was added to the crushed iron-containing pellets (S:L=1:1.25). The solid raw material was ground for about 2 hours. The resulting suspension separated from solution. The residue with a humidity of 29.1% was washed with 291 g of 20% NaCl solution and then with 1000 g of water. The solid residue was separated from the suspended particles and dried to obtain 621g iron ore solution, which contained (wt%):

[0041] (Fe+Mn)=67.1; Y=0.1; V=0.1; Ni=0.1; As=0.08; P=0.16.

Embodiment 3

[0043] Mix 1000g of iron ore powder with coke powder; place the resulting mixture under reducing conditions at 1300°C in the presence of an iron reducing agent. The resulting 1105 g lump was dry ground and sieved through a No. 0063 sieve. The following substances were obtained:

[0044] 1.606 g of iron-containing raw material (wt %) in the form of -3+0.5mm granules and -0.08mm powder:

[0045] (Fe+Mn) = 89.8; As = 0.23; P = 0.48.

[0046] 2.591g-0.08mm grade silicate and slag, including (Fe+Mn) = 12.7%, and

[0047] 3.8g irreversible loss during the separation process.

[0048] Transfer 606g of granular iron-containing raw materials to a steel ball mill, add 606g of water, 180g of NaCl and 3g of NaOH, and grind for about 2 hours. A suspension of solid particles on the order of -0.38 mm was obtained and filtered. 179 g of solid residue with a humidity of 29.5% were washed with 20% NaCl solution at pH 1.5 and then with 606 g of water. The resulting residue was mixed with 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 relates to a method for arsenic removal and phosphorous removal out of iron-containing materials and belongs to the metallurgy and mining field and the metallurgy field. Particularly, the invention relates to a method for treating iron ore, ferromanganese ore, ferrotitanium ore, ferrochrome ore, manganese ore and other ores, solution, sponge iron, pre-reduction ball and ironwork block. The method comprises the steps of increasing the iron content in the iron-containing materials, removing the unwanted impurities (firstly, arsenic and phosphorus), and separating the valuable impurities (firstly, vanadium) so as to increase the quality. The invention aims to increase the iron content in the products, decrease the arsenic and phosphorus contents to a preset value, decrease the technical period, reduce the dosage of alkali agent and lower the cost.

Description

technical field [0001] The present invention relates to the fields of metallurgy and mining and metallurgy, more particularly, the present invention relates to the treatment of iron ore, ferromanganese ore, ferrotitanium ore, ferrochromium ore, manganese ore, and other ores, concentrates, sponge iron, pre-reduced Chemo-physical method of balls, wrought iron blocks, improved quality due to increased iron content in ferrous raw materials, removal of unwanted impurities (first arsenic and phosphorus), and segregation of valuable impurities (first vanadium). Background technique [0002] Iron-containing raw materials used in industries such as blast furnace melting and iron and steel smelting processes are enriched to produce concentrates containing 70% iron, 0.15% arsenic, and 0.25% phosphorus. [Ye.F.Vegman (ed.), Blast-Furnace Production, Reference-book, Vol.1, Ore Preparation and Blast-furnace Process, Moscow, Metallurgy, 1989, p.496]. [0003] Among the various iron-bearing...

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): C22B3/22
CPCY02P10/20
Inventor 科夫尊·伊哥普罗森科·伊琳娜乌尔伯格·卓娅菲拉托夫·优尔伊伊力亚索夫·米克海罗沃洛维克·沃洛迪米尔尤什科夫·耶夫格尼
Owner 顿涅茨克钢铁制品私营股份公司
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