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Hingganite ore concentrate decomposition method

A technology of Xing'an stone concentrate and Xing'an stone, which can be applied in the direction of improving process efficiency and can solve problems such as refractory valuable metals

Inactive Publication Date: 2011-05-18
GUANGDONG INST OF RARE METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the research of mineral technology, xing'an stone concentrate is mainly xing'an stone, monazite and some niobium iron ore. It is difficult to decompose all valuable metals by traditional metallurgical decomposition methods.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Mix 100 grams of Xing'an stone concentrate (the main chemical composition is shown in Table 1) with 187 concentrated sulfuric acid (98% content) and 100 grams of magnesium sulfate heptahydrate, and put it into a roasting furnace for roasting. The roasting temperature is 180 ° C. The time is 8 hours; after roasting, add the roasted product into water, stir at 40°C for 2 hours, filter and wash; obtain an aqueous solution containing rare earth elements, tantalum, niobium and beryllium, about 1L, analyze the content of each element in the solution, REO: 21.94g / L, Nb 2 o 5 : 2.58g / L, Ta 2 o 5 : 0.11g / L, BeO: 2.11g / L. After calculation, the leaching rate of rare earth elements reaches 96%, and the leaching rate of tantalum, niobium and beryllium reaches 87%.

[0009] The main chemical composition (%) of Xing'an stone concentrate of table 1

[0010] components

[0011] content

Embodiment 2

[0013] Mix 100 grams of the above-mentioned Xing'an stone concentrate with 240 grams of concentrated sulfuric acid (content 98%) and 80 grams of magnesium sulfate, put them into a roasting furnace for roasting, the roasting temperature is 350 ° C, and the roasting time is 2 hours; after roasting, add the roasted product In water, stir at 75°C for 0.5 hours, filter and wash; obtain an aqueous solution containing rare earth elements, tantalum, niobium and beryllium, about 1L, analyze the content of each element in the solution, REO: 21.95g / L, Nb 2 o 5 : 2.55g / L, Ta 2 o 5 : 0.11g / L, BeO: 1.99g / L. After calculation, the leaching rate of rare earth elements reaches 94%, and the leaching rate of tantalum, niobium and beryllium reaches 85%.

Embodiment 3

[0015] Mix 100 grams of Xing'an stone concentrate (the main chemical composition is shown in Table 2) with 187 concentrated sulfuric acid (98% content) and 150 grams of strontium sulfate, and put it into a roasting furnace for roasting. The roasting temperature is 250 ° C and the roasting time is 6 Hours; after roasting, add the roasted product into water, stir at 30°C for 3 hours, filter and wash; obtain an aqueous solution containing rare earth elements and beryllium, about 1L, analyze the content of rare earth elements and beryllium in the solution, REO: 53.01g / L , BeO: 9.16g / L. After calculation, the leaching rate of rare earth elements reaches 97%, and the leaching rate of beryllium reaches 88%.

[0016] The main chemical composition (%) of Xing'an stone concentrate of table 2

[0017] Element

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PUM

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Abstract

A decomposition method of Xinganite ore concentrate comprises steps of mixing uniformly Xinganite ore concentrate, concentrated sulfuric acid and sulphate with weight ratio of 1:0.8-2.5:0.8-1.5, roasting at 180 DEG C to 400 DEG C for 0.5h to 8h, adding roasted material in water, at 20 DEG C to 80 DEG C, agitating for 0.5h to 3h, filtering and washing, thus lanthanon, beryllium, tantalum and niobium are contained in the solution. In the invention, the Xinganite ore concentrate, concentrated sulfuric acid and sulphate are roasted and composed, and lanthanon, beryllium, tantalum and niobium are leached out by water. In assurance of lanthanon leaching ratio, leaching ratios of beryllium, tantalum and niobium are improved. The lanthanon leaching ratio of the invention reaches 90% above, which prepares for next element separation.

Description

technical field [0001] The invention relates to a decomposition method of Xing'an stone concentrate. Background technique [0002] With the increasing consumption of rare earth resources, complex associated rare earth resources need comprehensive development and utilization. The Balzhe deposit is located in Zhalut Banner, Inner Mongolia Autonomous Region. It is a super-large rare earth metal deposit (also known as the 801 mine). Wang Yixian mentioned in "Geochemistry and Genesis of the Barzer Super-Large Rare Earth Niobium-Beryllium-Zirconium Deposit" ("Geochemistry", 1997, NO.1) that the Barzer deposit contains RE 2 o 3 (Rare earth element oxides) Nearly one million tons, ZrO 2 Millions of tons, BeO tens of thousands of tons, Nb 2 o 5 Hundreds of thousands of tons, Ta 2 o 5 tens of thousands of tons. The ore body occurs in albite amphibole granite, and the ore-forming elements mainly occur in xing'anite, niobite, pyrochlore and zircon, among which xing'anite is a un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/04C22B1/06C22B5/08C22B59/00C22B34/24C22B35/00
CPCY02P10/20
Inventor 刘志强陈怀杰肖方明梁振锋
Owner GUANGDONG INST OF RARE METALS
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