ለከፍተኛ-ሰልፈር እና ለከፍተኛ-አርሴኒክ የወርቅ ማዕድን የሳይያኒዲሽን ሌይኪንግ ዘዴዎች

The treatmeNt ከ ከፍተኛ-ሰልፈር እና ከፍተኛ-አርሴኒክ የወርቅ ማዕድናት has long been a challenging issue in the field of ማዕድን ማቀነባበሪያ. Due to their complex የማዕድን ስብጥር and high content of impurities, traditional ሲያንዲሽን methods often struggle to effectively extract ወርቅ ና ብር. This article will provide a detailed introduction to several ማስተማር methods suitable for high-sulfur and high-arsenic የወርቅ ማዕድናት, aiming to help ማዕድን practitioners better understand and apply these technologies.

Characteristics of High-Sulfur and High-Arsenic ወርቅ ወርቅs

High-sulfur and high-arsenic የወርቅ ማዕድንs typically contain a large amount of sulfides and arsenides. These impurities not only affect the የሊኪንግ ውጤታማነት of gold and silver but also pose a significant threat to the አካባቢ. Therefore, when dealing with such ores, ልዩ ሂደት flows are required to improve the የመልሶ ማግኛ መጠን of gold and silver and reduce የአካባቢ ተጽዕኖs.

Oxidative Roastinጂ ዘዴ

The oxidative roasting method is a commonly used approACH for treating high-sulfur and high-arsenic gold ores. This method oxidizes sulfur and arsenic in the ore into gaseous or solid oxides through high-temperature roasting, thereby removing impurities. After roasting, the ore structure becomes loose, which is more conducive to the ማስተማር of gold and silver.

የኦክሳይድ ጥብስ ዘዴ ልዩ ደረጃዎች እንደሚከተለው ናቸው ።

1. High-temperature roasting is carried out on the high-sulfur and high-arsenic የወርቅ ክምችት የተገኘው በ መንሳፈፍ to remove sulfur and arsenic.

2. The roasted ore undergoes high-አሲድቅድመ-ህክምና washing to dissolve most of the impurities.

3. The washed ore is then subjected to ሲያንዲሽን ሌቺንግ, where gold and silver are dissolved by ሳይያድድ እና መፍትሄውን ያስገቡ.

ቲዮሪያ Leaching Method

የ ቲዮሪያ leaching method is an emerging low-መርዛማነትየወርቅ ማውጣት ሂደት, especially suitable for treating gold ores with high arsenic and sulfur content. Thioዩሪያ in an acidic solution can dissolve gold and silver quickly, has ዝቅተኛ መርዛማነት, and is easy to regenerate. Compared with the traditional ሳይያንዲሽን method, the thiourea method is less ሚስጥራዊ to mineral components such as antimony, arsenic, መዳብ, and sulfur. Thus, it has obvious advantages when treating high-sulfur and high-arsenic gold ores.

የ thiourea leaching ዘዴ ልዩ ደረጃዎች እንደሚከተለው ናቸው

1. Gold-bearing sulfide concentrate is obtained through ጭነት.

2. The flotation concentrate is leached with a thioየዩሪያ መፍትሄ to recover gold and silver.

3. Gold and silver in the leaching solution are adsorbed by ion exchange ሙጫ or activated ካርቦን እና ከዚያ በኋላ የሚቀጥለውን ህክምና ያካሂዱ።

የቆሻሻ ማስወገጃ ዘዴ

የ የቆሻሻ ማስወገጃ ዘዴ is a leaching method with low የምርት ዋጋs and simple operation, suitable for treating low-grade high-sulfur and high-arsenic gold ores. This method involves piling the ore on a pre-prepared site and spraying or percolating with a የሳይያንዲድ ፈሳሽ መፍትሄ, allowing the solution to percolate through the ore and produce a leaching effect.

The specific steps of the ክምር መፍሰስ method are as follows:

1. ማዕድኑ በተወሰነ መጠን የተፈጨ ሲሆን ከዚያም በጣቢያው ላይ ተከማችቷል.

2. The ore is sprayed or percolated with a የሳይያንድ ሌይኪንግ solution, and the solution percolates through the ore to produce a leaching effect.

3. The leaching solution is collected, and gold and silver are recovered through ion exchange ሬንጅ, ገቢር ካርቦንአድቨርታይዘር, ወይም የዚንክ መተካት.

የተቀሰቀሰ Leaching መንገድ

The stirred leaching method is an efficient leaching method suitable for treating fine-grained ኦክሳይድ የተሰሩ ማዕድናት or sulfide ore calcines. This method ጥቅሞች በአንጻራዊ ሁኔታ የተጠናከረ ሰልፈሪክ አሲድ solution to leach the ore in a leaching tank equipped with a stirring device. Due to sufficient stirring, the የማፍሰስ ፍጥነት is fast, and the የማፍሰስ መጠን ከፍተኛ ነው.

የተቀሰቀሰው የሊች ዘዴ ልዩ ደረጃዎች እንደሚከተለው ናቸው

1. ማዕድኑ ወደ ጥቃቅን ቅንጣቶች (-75um በ 90% የሚቆጠር) የተፈጨ እና ከዚያም ወደ ማቅለጫው ማጠራቀሚያ ውስጥ ይጨመራል.

2. Stirred leaching is carried out with a relatively concentrated ሰልፈሪክ አሲድ solution. The መዳብ concentration in the leaching solution is relatively high and can be directly used for copper electrowinning.

3. የሊች መፍትሄ ወርቅ እና ብርን መልሶ ለማግኘት ቀጣይ ህክምና ይደረጋል.

መደምደሚያ

The treatment of high-sulfur and high-arsenic gold ores requires the adoption of special ሂደት ፍሰትs to improve the የመልሶ ማግኛ ፍጥነት። of gold and silver and reduce የአካባቢ ተጽዕኖs. The oxidative roasting method, thiourea leaching method, ክምር leaching method, and stirred leaching method are all effective የሕክምና ዘዴዎች.