Brief Analysis of the Application of Superfine Vertical Mill in Ultra-fine Processing of Non-metallic Minerals

On May 7, five all-mechanical power industry fine calcium, calcium is booming biological 20,000 tons of food production; June 2017, five full-power jiaoling Jinpeng vertical mill, vertical mill ultrafine production line went into operation; June 2017 On the 28th, two SCLM1100 ultra-fine vertical mill production lines from the Guangyuan Chemical Lianzhou Plant were officially put into use.

China Powder Network News The current global demand for non-metallic mineral powders is growing. Only for heavy calcium consumption, in the past 10 years, demand has increased by nearly 90 million tons from 35 million tons, with an average annual growth rate of nearly 9.5%. It is predicted that the annual global demand for non-metallic ore fines will continue to grow at a high rate in the next 10 years. While pursuing stable product quality and uniform particle size distribution, the market is also urgently required to save energy and reduce consumption of non-metallic mineral powder products, and higher requirements are imposed on production equipment.

Current status of ultra-fine non-metallic mineral production equipment

China's large-scale, industrialized ultra-fine powder processing and ultra-fine pulverization and fine grading equipment began after the reform and opening up. So far, China's superfine pulverization technology and equipment have experienced the introduction of foreign technology, equipment and domestic imitation to intellectual property rights. Or the evolution of invention patents. The comprehensive performance of the equipment's processing capacity, unit product energy consumption, wear resistance, process matching and automatic control has been significantly improved, and the gap between the advanced performance of foreign advanced technology and equipment has gradually narrowed.

Several ultra-fine non-metallic mineral production equipment

At present, China's non-metallic ore dry superfine grinding and grinding process equipment mainly includes Raymond mill, agitator mill, vibrating mill, ring roller mill, ball mill and vertical mill.

In recent years, the state has vigorously promoted energy conservation and emission reduction policies, and equipment ring roller grinding for energy saving and consumption reduction came into being. According to the excellent performance of the vertical mill in the cement industry, it has become one of the ideal non-metallic mineral processing equipments. It can meet the requirements of reliable operation, large output, stable product quality and remarkable energy saving. (30% to 40% energy saving than ball milling).

Below we take the common heavy calcium dry processing as an example to analyze the energy consumption of several commonly used ultra-fine non-metallic mineral production equipment systems.

Table 1 Energy consumption analysis of common heavy calcium dry processing systems

Note: The number of meshes is measured by d97

For further explanation, taking the production of 1,250 mesh heavy calcium as an example, from the perspectives of the technical specifications of the feed size, the optimal production fineness range, the pulverization mechanism, the power consumption of 1,250 mesh tons of products, and the single-machine production scale of 1,250 mesh tons of products, The actual operating parameters of different dry processes are compared. The comparison results are shown in Table 2.

Table 2 Comparison of production capacity of common heavy calcium production equipment

As can be seen from Tables 1 and 2, a comparison of the above several dry processes can be seen:

(1) From the stand-alone production scale of ultra-fine products, the single-machine production capacity of impact mill, dry sand mill and ring roller mill is small. In comparison, ball mill and vertical mill can obtain more under the same conditions. High yield, easy to achieve large-scale processing of heavy calcium.

(2) Ultra-fine vertical grinding In the ultra-fine processing of heavy calcium, the biggest feature is that it can produce heavy calcium products with lower power consumption (when producing products below 1250 mesh) and larger scale.

(3) The single-machine capacity of the ball mill is the largest, and the performance is more outstanding when producing products of more than 1,250 mesh. The new ultra-fine vertical mill can produce powders of less than 1500 mesh at a time, especially when producing 400-1000 mesh heavy calcium products.

At present, there are many types of special mills for superfine powder industry on the market. Xiaobian brings together many high-quality grinding equipments in the industry. We recommend the following to you for selection!

Wuquan Machinery: VSLM-1100H superfine vertical mill

Zhejiang Fengli: Annual production of 20,000-300,000 tons of heavy calcium carbonate production line

Guilin Hong Mine: HLMX Superfine Vertical Mill

Dawn Heavy Industry: LUM Series Superfine Vertical Mill

Collierk: Vertical Mill

Longyan Yifeng: YFLM series superfine vertical mill

Jianye Heavy Industry: Superfine filler special mill / calcium carbonate superfine grinding

Great Wall Metallurgy: Vertical Dual-Power Superfine Mill

Longyan Mountain and: SHM Series Mountain and Ring Roller

Changsha Research Institute of Mining and Metallurgy: JM Series Vertical Screw Mixing and Grinding Machine

Arkanto: vertical mill