Scheelite decomposition method

A technology of scheelite and tungsten ore, which is applied in the field of scheelite decomposition, can solve problems such as increased ore impurity content, deviation in composition changes, and inaccurate estimation of phosphorus-containing additives.

Inactive Publication Date: 2021-05-25
XIAMEN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As the ore grade has become lower and lower in recent years, and the impurity content in the ore has increased, the original empirical data has deviated with the composition of the ore, resulting in inaccurate estimation of the amount of phosphorus-containing additives
That is to say, due to the change of the composition of phosphorus-consuming impurities in the ore, the second addition amount of phosphorus-containing additives is estimated to be inaccurate. more, the consumption of decomposed ore increases, and the follow-up process also increases the cost of phosphorus removal

Method used

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Effect test

Embodiment 1

[0054]Take the 441-450 to formulate 200G and 400ml water in the beaker in the beaker. When the HCL of 33 ml 1: 1.5 is added, the new foam can no longer produce a calcium carbonate in 100g Yuapu ore, and 6.0g. This can be obtained by 1.12 g of calcium carbonate consumption in 100 g of ionic ore.

[0055]Production of 鹭 鹭 ore per batch of 5T, liquid base, phosphate decomposition ore, leaching liquid P / WO3Request 3 ~ 8 × 10-3. The amount of phosphoric acid consumed from calcium carbonate was 177kg, and 442 additions after adding additives and p / wos.36.3 × 10-3Slag containing ZWO3= 0.28%.

Embodiment 2

[0057]Take 511-520 in the form of Yuxi ore 200g, 400ml water in the beaker, when adding 63 ml 1: 1.5HCl, no new foam is no longer produced, can be obtained from 100g Espanic carbonate to 11.5g, from This can be obtained by 2.15 g of calcium carbonate consumption in 100 g of ionic ore.

[0058]Production of 鹭 鹭 ore per batch of 5T, liquid base, phosphate decomposition ore, leaching liquid P / WO3Request 3 ~ 8 × 10-3. The amount of phosphoric acid consumed from the calcium carbonate was 340kg, and 512 additional solutions p / wo were added to the addition of additives.35.2 × 10-3Slag containing ZWO3= 0.35%.

Embodiment 3

[0060]Take 551-560 in the form of 200g, 400ml water in the beaker, and no longer produce a new foam when adding 87 ml 1: 1.5HCl, no more than 15.8G carbonate in 100g Espanic ore, thereby P is 2.95 g of calcium carbonate consumption in 100 g of ionic ore.

[0061]Production of 鹭 鹭 ore per batch of 5T, liquid base, phosphate decomposition ore, leaching liquid P / WO3Request 3 ~ 8 × 10-3. The amount of phosphoric acid consumed from calcium carbonate was 466kg, and 552 additions to the addition of liquid p / wo according to the addition of additives.35.7 × 10-3Slag containing ZWO3= 0.30%.

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Abstract

The invention discloses a scheelite decomposition method. The method comprises the following steps that S1, the amount of a phosphorus-containing additive required for leaching tungsten oxide in a measured sample is calculated and is recorded as a first adding amount; S2, the content of calcium carbonate in the measured sample is measured; S3, the amount of the phosphorus-containing additive required for consuming the calcium carbonate in the content under the alkaline condition is calculated according to the content of the calcium carbonate in the measured sample, and the amount is recorded as a second adding amount; S4, the first adding amount and the second adding amount are summed to obtain the total amount of the phosphorus-containing additive required to be consumed by the measured sample; S5, according to the total amount in S4, the amount of the phosphorus-containing additive required to be added when the to-be-treated scheelite is decomposed is calculated; and S6, under the alkaline condition, the phosphorus-containing additive is added into to-be-treated scheelite according to the amount of the phosphorus-containing additive calculated in the S5 for scheelite decomposition. According to the scheelite decomposition method, the second adding amount of the phosphorus-containing additive is calculated by measuring the content of calcium carbonate, and the accuracy of the adding amount of the phosphorus-containing additive is improved.

Description

Technical field[0001]The present invention relates to the field of decomposition process of white tungsten ore, in particular, to a white tungsten decomposition method.Background technique[0002]Existing white tungsten decomposition methods can be used in NaOH-NA3PO4Under the decomposition of the white tungsite, the additive used is a phosphorus-containing additive, including a mixture of phosphoric acid, sodium phosphate, and the mixture of other substances.[0003]The calculation method of existing phosphorus-containing additives is, first calculate the leaching WO3The first addition of the required first addition, and then estimates the desired second addition, first addition, second addition summation and sum of the total addition, and the total amount of the second addition, the first addition, and the second addition and summation. When the white tungsten ore used in Xiamen Tungs is relatively stable, the amount of phosphorus-containing additive can be determined according to the...

Claims

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Application Information

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IPC IPC(8): C22B3/10C22B34/36
CPCC22B3/10C22B34/36Y02P10/20
Inventor许圳安陈杰吴道奕王海军
OwnerXIAMEN TUNGSTEN