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Zinc powder acts as a reducing agent in the zinc powder replacement process in the cyanidation plant. The uniform and reasonable feeding of zinc powder can not only reduce the content of residual zinc, but also reduce production costs and improve the replacement effect. In the zinc powder replacement operation, there are three commonly used zinc powder feeding machines: disc zinc powder feeding machine, belt zinc powder feeding machine and spiral zinc powder feeding machine. This article will introduce the characteristics of the three feeders one by one to help you choose a suitable zinc powder feeder for your cyanidation plant.
The disc zinc powder feeder is mainly composed of zinc powder funnel, disc, and transmission device. In operation, the zinc powder is loaded into the receiving cylinder from the hopper, and the zinc powder piles up on the disc for gravity. As the disc rotates, the unloading knife will evenly scrape the zinc powder out of the disc and the zinc powder falls into the receiving hopper, completing the uniform feeding operation.
Due to the small amount of zinc powder, the model of the disc zinc powder feeder is smaller than that of the ordinary disc feeder. The diameter of the disc is generally 140-170mm, and the speed is about 1r/min.
The amount of zinc powder added can be adjusted at any time according to the processing capacity or the level of gold content in the solution, which can ensure the smooth progress of the zinc powder replacement operation in cyanidation plant.
For example, a disc feeding machine produced by a mining equipment design institute is suitable for use in the gold cyanidation plant. The zinc powder is continuously and evenly added to the mixing vessel filled with precious liquid.
Its parameter performance is shown in the figure below.
| Disc Zinc Powder Feeding Machine Technical Parameter|
| Electric Motor|
|Diamater(mm)|| Speed(r/min)|| Model||Speed(r/min)|
| 140|| 1.13|| 0~2||1.5~2.4||Y801-4||0.55|| 74|
The 250*1800 belt zinc powder feeder is a special equipment used to add zinc powder in the zinc powder replacement process in cyanidation plant. It is used to complete the zinc powder addition and the mixing of the precious liquid and the zinc powder.
It consists of a belt and a mixing barrel. During operation, the zinc powder is fed to the belt surface through the ore funnel. With the rotation of the AC speed control motor, the belt moves forward slowly, the material on the belt is fed into the next process to realize continuous feeding.
The amount of zinc powder that needs to be added every 8h can be evenly spread on the belt surface at one time, and continuously and automatically added to the mixing barrel during work;
It can reduce labor intensity and reduce the loss of zinc powder.
The parameter performance of the 250*1800 belt zinc powder feeder is shown in the figure below:
|Belt Zinc Powder Feeding Machine Technical Parameter|
Drum Central Bureau(mm)
Valve Opening and Closing Times
The spiral zinc powder feeder is a newly developed zinc powder feeding machine. It is composed of five parts: AC speed regulating motor, worm gear reducer, feeding trough, feeding screw, and base. When working, the speed-adjusting motor drives the reducer to run through the coupling, and then drives the feed screw to rotate through the coupling installed on the output shaft of the worm gear reducer, and evenly sends the material in the upper barrel to the next process.
The main features of the spiral zinc powder feeder are:
Adopt AC speed regulating motor, the amount of zinc powder can be adjusted at any time;
Compared with other zinc powder feeding equipment, it has the advantages of small cross-section size, good sealing performance, stable and reliable operation, multi-point loading and unloading, safe operation, and easy maintenance.
Its model and technical performance are shown in the figure below:
| Spiral Zinc Powder Feeding Machine Technical Parameter |
Screw Dia*Height (mm*mm)
| LXG-30|| 30*390||Adjustable|| 4.17-41.7|| YCT-112-4A||0.55||106|
The above introduces three commonly used zinc powder feeding machines and their characteristics. At present, the spiral zinc powder feeder is widely used in cyanidation plants, which not only has the advantages of uniform and continuous feeding, convenient use, etc., but also can reduce the oxidation of zinc powder during use. You can comprehensively consider the feed rate, production situation and other factors, and choose a suitable zinc powder feeder for their cyanidation plant.
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