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A discussion on the technology of removing iron from feldspar powder

Author: Administrator     Published in: 2016-10-17    

Feldspar minerals are often due to iron and greatly reduced the quality of feldspar, affecting the price of feldspar. Reduce the iron content of feldspar, improve the quality of feldspar, increase economic efficiency is the first issue in the face of feldspar mining, processing enterprises.


特別是近幾年來,早期優(yōu)質(zhì)的低鐵長石礦產(chǎn)資源已幾乎被開采殆盡,再加上現(xiàn)需用長石企業(yè)對長石品質(zhì)的要求越來越高,利用現(xiàn)有鐵含量偏高的長石資源來制備低鐵長石以價值凸顯,勢在必行。

Especially in recent years, early high quality low iron feldspar resources were almost depleted, plus the need of enterprise quality feldspar feldspar have become increasingly demanding, the preparation of low iron feldspar to highlight the value of using the existing high iron content of feldspar resources, it is imperative to.


特別是值得一提的是有些長石礦源鐵含量偏高而品質(zhì)大大折扣。 想搞好長石除鐵有以下幾個問題必須弄清楚: 1. 長石中鐵的賦存形式: 鐵在長石中常常以磁鐵礦、赤鐵礦、黑云母、白云母、綠泥石、鈦鐵礦等形式存在,以上幾中存在形式都具有磁性特征,完全可以通過磁選這種低成本的辦法來降低鐵含量。當(dāng)然,鐵也會以無磁性特征的形式存在于礦石中,例如黃鐵礦、菱鐵礦。 2. 磁性顆粒與礦石的解離粒度。如果200目(篩上)以粗,干法除鐵會取得不錯的效果,輥式干式強(qiáng)磁選機(jī)的選擇很重要,既要場強(qiáng)高,還要梯度高,各家磁選機(jī)的磁選效果差異很大,某公司引進(jìn)的德國技術(shù)的輥式干式強(qiáng)磁選機(jī)比國內(nèi)的設(shè)備進(jìn)行長石粉除鐵、長石粉降鐵效果顯著的多;-200目粉體的話最好采用濕法工藝除鐵,不僅污染小,而且效果好,其效果主要取決于場強(qiáng)和梯度,國內(nèi)設(shè)備外觀相似,但是技術(shù)水平參差不起,選礦效果差別很大。

In particular, it is worth mentioning that some feldspar ore source of high iron content and the quality of a large discount. Want to do a good job in addition to iron feldspar have the following questions must be clear: the occurrence of 1 feldspar iron: iron in feldspar often magnetite, hematite, biotite, muscovite, chlorite, ilmenite and other forms exist, the above existence form has magnetic properties, completely can reduce the content of iron by magnetic separation this low cost way.

 

Of course, the iron will also be in the form of non - magnetic characteristics in the ore, such as pyrite, iron ore. 2 the particle size of magnetic particles and ore. If (200 mesh sieve) with coarse, dry iron will achieve good results, roller dry magnetic separator is very important, both to high field strength, but also the high gradient magnetic separator, magnetic separation effect of the difference is very big, and dry type strong magnetic separator of a German company to introduce the technology of feldspar powder in addition, the effect of iron reduction of iron feldspar powder significantly more than the domestic equipment; 200 mesh powder is best by wet process in addition to iron, not only pollution is small, but the effect is good, the effect mainly depends on the intensity and gradient, the domestic equipment of similar appearance, but the technical level is different, the effect of different concentration.

 

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