At present, China's demand for ultra-pure iron ore concentrate increased iron concentrate and applications are increasingly widespread. Therefore, the application of ultra-pure iron concentrates is becoming more widespread. As a result, manufacturers of ultra-pure iron concentrates are increasing and their scale is expanding. The annual production capacity has grown from the initial two or three thousand tons to the current one or two thousand tons. However, the ultra-pure iron concentrate has extremely strict requirements on the SiO 2 content, and the fluctuation range is strict. In addition, the relatively common iron fines, the market for ultra-pure iron concentrates is not too big. Due to market demand, the manufacturers of ultra-pure iron concentrates are mostly joint ventures and have relatively stable users. Therefore, it is necessary to be cautious in investing in the production of ultra-pure iron concentrates. The following issues should be noted. First, do a good job in market research to avoid blind investment Although ultra-pure iron concentrates are used more and more widely, the current total demand is not very large. If you can invest in ultra-pure iron concentrates, you must do a good job in market research. First, contact one or two users at the nearest place to ensure sales; at the same time, we should broaden channels to produce different grades of products to accommodate more users. Secondly, we must reach a product price intention letter with users under the principle of mutual benefit. The law of market economy development, when the price changes, share the risk with the user to avoid losses and slow sales. Second, do a good job of feasibility study Many practices have shown that there are not many ordinary iron concentrates that are suitable for the production of ultra-pure iron concentrates. Some iron concentrate powders can reach the ultra-pure iron concentrate standard only after fine grinding and magnetic separation; while some iron concentrate powders cannot be reached after re-grinding-reverse flotation; that is, the use can be achieved, but Since the mineral crystal grain size is too fine, it has no production value. Therefore, the production of ultra-pure iron concentrates must be made of high-quality iron concentrate powder with good properties. Even so, due to the small size of the ultra-pure iron concentrate plant, it is difficult to have greater adaptability. An ultra-pure iron concentrate ore plant in Hebei Province used a high-quality iron concentrate of 68% grade in a large mine. After production, in order to reduce costs, it is intended to produce local low-grade iron concentrate powder with similar ore properties. Since these low-grade iron concentrates are mostly surface ore, the mud content is relatively large. Although the magnetic separation is increased twice in advance, the grades at the time of selection are even higher than the test ore samples, but the products do not meet the quality requirements. The yield is extremely low and forced to be deactivated. This caused a lot of damage. Third, the choice of equipment With the continuous improvement of the level of science and technology and the changes in the development of the international economy, China's ultra-pure iron concentrate production will have great potential to be tapped, and demand will continue to increase. Therefore, the design of ultra-pure iron concentrate should have room for future expansion, or use the method of small before and after, that is, the grinding equipment is designed according to half or one-third of the production capacity of sorting, filtration and drying equipment. In this way, not only can it make up for the lack of stable quality due to factors such as technology and experience at the beginning of production, but also because the follow-up operation can be adjusted with the amount of ore, it will not have much impact on production costs. Once the market demand increases, the grinding equipment can be rapidly increased to increase production. In addition, it is difficult to classify fine particles. Excessive wear will cause a lot of metal loss and affect the sorting index. Therefore, grinding machines, grinding media and grading equipment should use small equipment as much as possible. For example, vibratory grinding machines have been widely used in Anyang, Henan. This grinding machine can not only continuously grind or indirectly Grinding, and small footprint, easy to install, is very conducive to the fine grinding of iron concentrate; and grinding medium from spherical to shaped steel segment, will be more conducive to the finer under the premise of reducing excessive grinding Grinding requirements, and grinding efficiency is better than steel balls, so it can save consumption; high-frequency vibrating fine screen is used for fine-grain classification (-200 mesh or less), although it is also applied, but the classification of finer-grade materials requires hydrodynamic swirling. The device is undoubtedly the best. At present, hydrocyclones have developed greatly in terms of materials and grading efficiency. Therefore, the hydrocyclone is the preferred grading equipment for ultra-pure iron concentrates. Fourth, quality control Although ultra-pure iron concentrate is a small-scale production, it not only has high purity, but also requires a small fluctuation range, and has high requirements for stability in the production process. Raw materials, pharmaceuticals, and processes are subject to change at any time. In addition, the change of raw materials, the improvement of chemicals, the influence of concentration on grinding and sorting, etc., need to be continuously explored in the production process. Therefore, it is necessary to establish a separate laboratory. As the final check-up system of the product, the laboratory is even more important. It not only guides the production process in a timely manner, but also is responsible for the user and ensures that the products are qualified. This is a major event related to the survival of the enterprise. Therefore, it is indispensable to establish a laboratory for the corresponding function according to the quality requirements of the user. V. Production technology management Regardless of whether the source of the raw material is single, its nature is always changing. Sometimes it is only a rough process to obtain better indicators. If it is not a change in the source of raw materials or the nature of the raw materials, it is necessary to blindly negate the technical indicators provided by the laboratory. The production should be organized strictly according to the indicators in the feasibility report. The selected fineness and dosage in the report are the only criteria to guide the initial production. By strengthening the grinding classification and increasing the dosage of the agent, it is possible to achieve stable production of qualified products as soon as possible. The best way. Sixth, automatic detection and automatic control The production scale of ultra-pure iron concentrate is small, but its requirements for automatic detection and automatic control are more important than any other selection plant. As we all know, the selected particle size is the basis for sorting out qualified products, and quickly and accurately detecting whether the final product is qualified, is also the guarantee to ensure the passing of the factory products, and is the most important basis for guiding production. With the improvement of automation, online measurement has been rapidly developed. At present, various particle size analyzers and online grade analyzers in China have been used in many applications, and the application of automatic control of grinding classification and chemical addition is also more extensive. Therefore, the design should be fully considered, in order to facilitate the production of automated production. Seven, the old factory transformation Due to the strict quality requirements of ultra-pure iron concentrates, and the current demand is not too large, the sales are not as extensive as ordinary iron concentrates. Therefore, it is ideal to carry out the reconstruction on the basis of the old selection plant, which not only saves a lot of money, but also has a strong adaptability, that is, it can process all products into ultra-pure iron concentrate and process some of them. Once there is a problem with the sales or price, it is no longer necessary to invest any money to resume the production of ordinary iron concentrate powder. Eight, backwater utilization The raw material of ultra-pure iron concentrate is ordinary iron concentrate powder. Therefore, the tailings yield is very low, and the tailings slurry contains a large amount of chemicals, such as random discharge, which not only wastes water resources, but also causes environmental pollution. If the pit is drained nearby, the well is drilled, the tailings water seeps into the well, and the return process is reused. The tailings in the pit can be cleaned regularly and stacked in a safe place. In this way, water shortages can also be solved. Due to the small scale of ultra-pure iron concentrate production, it is very suitable for township and village enterprises. At present, China's township enterprises have a large proportion of ultra-pure iron concentrates. Therefore, it will be of great benefit to deal with the above problems. Child safety seat Yiwu Waterfilter Industry And Trade Co.,ltd , https://www.dancertrade.com
Several problems should be paid attention to in the design of ultra-pure iron concentrate ore dressing plant