What is an Acoustic Mine?

Ore mined without beneficiation or other processing. It is called raw coal in coal mines. ^[1]

The ore is mined from the mine without beneficiation or other technical processing. A small number of raw ore can be directly applied, and most of the raw ore needs to be processed through beneficiation or other technologies before they can be used. In the beneficiation, the ore that has been crushed into the sorting operation is called the selected raw ore. ^[2]

There are many uncertain factors affecting the effect of precious metal beneficiation, such as the nature of the original ore, the size of the grinding ore, the flotation reagent, the reaction time, and so on. The results of many complex uncertain factors make it difficult for technicians to accurately and timely determine problems that occur in the beneficiation process. ^[3]

The selected grade is one of the important operating parameters of the mine. Whether it is reasonable or not has a significant impact on the efficiency of the mine and the degree of resource utilization. Reasonably selected

Grade is not an independent parameter and involves factors such as technical indicators of the beneficiation, the cost of mining and dressing, the price of the product, and investment. Studying the best raw ore selection grades has great practical significance for mining and processing joint enterprises. ^[4]

1. Predict the changes of ore and take corresponding measures

The metallogenic conditions of metal mines are relatively complex, and the occurrence status of gold-bearing ores and the size and occurrence of ore bodies are relatively large. Therefore, as the mining work continues, the properties of the selected raw ore will change greatly. Therefore, the ore dressing major should cooperate with the mining and geology majors in accordance with the mining plan and the sampling results of the original ore sub-block or middle section of the next year to conduct timely research on the raw mineral composition and necessary ore dressing tests. Compile necessary maps of changes in raw mineral properties and changes in the amount of reagents in order to make predictions for the next production, purposefully adjust the internal structure of the process and the amount of various beneficiation reagents in time to improve the technical and economic indicators of beneficiation.

2. Contact the miners in time to ensure a balanced supply

In order to make the properties of the selected ore relatively stable and uniform in size, so as to ensure the improvement of the technical and economic indicators, the ore dressing plant should always contact the miners to keep abreast of the ten, month, and quarter mining conditions, and require them to reasonably mix and balance the mining . In the case of ore with a large difference in ore properties, it should be mined and transported under conditions to facilitate ore processing.

Third, we must ensure the quality of the raw ore

One of the main contents of strengthening raw ore management is to ensure the quality of raw ore. Ensure the size of the ore supply and minimize other debris. Mining, mining and other links must strictly control the inclusion of debris, such as pit logs, pole heads, detonation cables, to prevent accidents such as parking or damage to equipment due to the inclusion of debris. During the mining process, large blocks must be processed in time. For certain ore with large mud content, special attention must be paid to the prevention and control of underground water to prevent a large amount of water from entering the ore slide, which will cause serious ore sludge and affect the ore processing.

Fourth, strengthen the manual selection, improve the grade of raw ore selected

Raw ore

With the development of current beneficiation production technology and the degree of demand for metals, many mines in order to extend the service life of the mine, increase metal reserves, and reduce the grade of the ore boundary. Since then, the grade of the selected raw ore has also decreased.

In order to make full use of the existing production equipment and handle as much ore as possible, one of the first tasks is to strengthen manual selection. This has the following advantages:

(1) The grade of raw ore to be selected has been improved, and the conditions and effects of beneficiation have been improved;

(2) Eliminate waste rock, increase production capacity, and reduce ore dressing costs.

The commonly used methods are: manual manual beneficiation; discarding waste rock by photoelectric concentrator; heavy media beneficiation method and so on.

V. Concentrators should strengthen management and flexibly organize production

Generally speaking, the capacity of the crushing plant is relatively large and the working time is relatively small. This requires timely contact with the mining department to ensure the supply of ore and prepare sufficient raw materials for the next process. At the same time, the dressing plant should use the time difference between the original ore bin and the powder ore bin to ensure the timely and balanced processing of the ore according to the mining conditions. Oxidation phenomenon.

6. Leaders attach importance to coordination

Mining leaders must pay attention to this work, and regularly hold meetings of professionals in geology, mining, and beneficiation, and require the geological and mining departments to actively cooperate to ensure that the ore is evenly distributed and create good conditions for the production of the beneficiation plant.