阅读说明：本技术 一种锑冶炼精炼除铋剂 (Bismuth removing agent for antimony smelting and refining ) 是由 唐好 张涛 范凌 于 2019-12-18 设计创作，主要内容包括：一种锑冶炼精炼除铋剂,包括以下质量百分配比的组分：硫的含氧酸盐10％～30％,磷的含氧酸30％～40％,磷的含氧酸盐30％～60％。利用本发明,能有效解决锑冶炼精炼除铋的难题,而锑冶炼精炼除铋剂的使用,将更好的提升精锑品质,进一步减少有害元素对锑应用范围的限制,从而将锑的使用向更多领域推广。(The bismuth removing agent for antimony smelting and refining comprises the following components in percentage by mass: 10 to 30 percent of oxysalt of sulfur, 30 to 40 percent of oxyacid of phosphorus and 30 to 60 percent of oxysalt of phosphorus. The invention can effectively solve the problem of bismuth removal in antimony smelting and refining, and the use of the bismuth removing agent in antimony smelting and refining can better improve the quality of refined antimony and further reduce the limit of harmful elements on the application range of antimony, thereby popularizing the use of antimony to more fields.)

1. The bismuth removing agent for antimony smelting and refining is characterized by comprising the following components in parts by weight: the paint comprises the following components in percentage by mass: 10 to 30 percent of oxysalt of sulfur, 30 to 40 percent of oxyacid of phosphorus and 30 to 60 percent of oxysalt of phosphorus.

2. The bismuth removing agent for antimony smelting refining according to claim 1, which is characterized in that: the oxysalt of sulfur is sodium thiosulfate, anhydrous calcium sulfite or anhydrous sodium sulfite.

3. The antimony smelting refining bismuth removing agent according to claim 1 or 2, which is characterized in that: the oxyacid of phosphorus is phosphoric acid, phosphorous acid, metaphosphoric acid or polyphosphoric acid.

4. The antimony smelting refining bismuth removing agent according to claim 1 or 2, which is characterized in that: the oxysalt of phosphorus is sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium hexametaphosphate or sodium tripolyphosphate.

5. The bismuth removing agent for antimony smelting refining according to claim 3, which is characterized in that: the oxysalt of phosphorus is sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium hexametaphosphate or sodium tripolyphosphate.

Technical Field

The invention relates to an auxiliary material for fire refining of crude antimony, in particular to a bismuth removing agent for smelting and refining antimony.

Background

China is the first world producing antimony in the world, and has become the world's largest producing countries of antimony and its compounds since the end of the 20 th century, wherein 60% of antimony is used for producing flame retardant, 20% of antimony is used for alloy material, sliding bearing and welding agent in battery, and the rest 20% is used for catalyst and ceramic for chemical fiber. With the wide application of antimony in flame retardants and catalysts, the requirement for the content of impurity elements is also increasing. At present, the smelting level of antimony in China is in the leading position in the world, wherein metals such as lead, iron, copper, tin, cadmium and the like can be thoroughly removed during antimony smelting, but bismuth element is not thoroughly treated by a scientific method.

Disclosure of Invention

The invention aims to solve the technical problem of providing the bismuth removing agent for antimony smelting and refining, which can effectively solve the problem of bismuth removal in antimony smelting and refining.

The technical scheme adopted by the invention for solving the technical problems is as follows: the bismuth removing agent for antimony smelting and refining comprises the following components in percentage by mass: 10 to 30 percent of oxysalt of sulfur, 30 to 40 percent of oxyacid of phosphorus and 30 to 60 percent of oxysalt of phosphorus.

Further, the oxysalt of sulfur may be sodium thiosulfate, anhydrous calcium sulfite, anhydrous sodium sulfite, or the like.

Further, the oxyacid of phosphorus may be phosphoric acid, phosphorous acid, metaphosphoric acid, polyphosphoric acid, or the like.

Further, the oxysalt of phosphorus may be sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium hexametaphosphate, sodium tripolyphosphate, or the like.

The preparation method of the antimony smelting and refining bismuth removing agent comprises the following steps: the fertilizer is prepared by uniformly mixing and stirring the three substances of oxysulfate, oxyacid of phosphorus and oxysulfate of phosphorus according to the mass percentage.

The invention adopts the principle that bismuth has stronger metallicity than antimony and simple substance of bismuth is easier to carry out chemical reaction with substances with the pH value less than 7, adopts the bismuth removing agent which is scientifically proportioned by oxysalt of sulfur, oxyacid of phosphorus and oxysalt, and can reduce the bismuth content to 0.01 percent during antimony smelting through multiple tests.

The chemical reaction formula is as follows:

2Bi+3SO₃ ^2-＝Bi₂(SO₄)₃；

Bi+PO₃ ^-＝BiPO₄；

Bi+PO₄ ^3-＝BiPO₄；

Bi+SO₄ ^2-＝BiSO₄。

the invention can effectively solve the problem of bismuth removal in antimony smelting and refining, and the use of the bismuth removing agent in antimony smelting and refining can better improve the quality of refined antimony and further reduce the limit of harmful elements on the application range of antimony, thereby popularizing the use of antimony to more fields.

Detailed Description

The present invention is further illustrated by the following examples.