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過(guò)二硫酸鉀的氧化抑制渣漿泵方法
使用過(guò)二硫敢鉀氧化抑制毒砂.比使用大量的石灰或者高錳酸鉀，或者在石灰的堿性介質(zhì)中處理毒形效果要好得多。過(guò)二硫酸鉀是一種強(qiáng)氧化劑，與高錳酸鉀相比，不僅抑制毒砂，而且活化黃鐵礦，具有更長(zhǎng)的最佳氧化時(shí)間，顯示出極好的選擇性。它在優(yōu)先浮選中的特效與其雙重性質(zhì)有關(guān)，即過(guò)二硫酸鉀與水相互作用，生成過(guò)一硫酸鉀和硫酸鉀，生成的過(guò)一硫有酸鉀同樣產(chǎn)生硫酸鉀和活性雙氧水。反應(yīng)如下:
因礦漿堿度為8.5左右，這一條件使雙氧水 分解并析出氧氣，氧氣與礦物(例如黃銅礦、黃鐵礦、毒砂等)表面相互作用，產(chǎn)生適量的活性硫酸銅和單質(zhì)硫，反應(yīng)如下:渣漿泵廠家
所以過(guò)二硫酸鉀的加入，不僅可以抑制毒砂，而且還可以借助所生成的硫酸銅與礦物作用以及所生成的單質(zhì)硫活化黃銅礦和黃鐵礦等礦物，使銅礦物和黃鐵礦與毒砂實(shí)現(xiàn)最佳分選，從而提高金的回收率。
Oxidation inhibition of potassium persulfate by slurry pump
It is better to use a lot of lime or potassium permanganate, or in the alkaline medium of lime. Compared with potassium permanganate, potassium peroxydisulfate is a strong oxidant. Compared with potassium permanganate, it not only inhibits arsenopyrite, but also activates pyrite. It has a longer optimal oxidation time and shows excellent selectivity. Its special effect in preferential flotation is related to its dual properties, that is, potassium persulfate interacts with water to generate potassium persulfate and potassium sulfate, and potassium persulfate and potassium persulfate also generate potassium sulfate and active hydrogen peroxide. The reaction is as follows:
Because the pulp alkalinity is about 8.5, this condition makes hydrogen peroxide decompose and precipitate oxygen. Oxygen interacts with the surface of minerals (such as chalcopyrite, pyrite, arsenopyrite, etc.) to produce appropriate amount of active copper sulfate and elemental sulfur. The reaction is as follows: slurry pump manufacturer
Therefore, the addition of potassium persulfate can not only inhibit the arsenopyrite, but also activate the minerals such as chalcopyrite and pyrite with the help of the interaction between the generated copper sulfate and minerals and the generated elemental sulfur, so as to realize the best separation of copper minerals, pyrite and arsenopyrite, thus improving the recovery of gold.
