Focus on slag powder to develop green industry
The slag micropowder is a powder material obtained by grinding the water-quenched granulated blast furnace slag to a prescribed fineness. This new type of green products, effective use of metallurgical blast furnace slag, slag to reduce footprint, reduce environmental pollution also play a role in promoting, truly turning waste into treasure, to achieve sustainable development.
China's domestic slag micropowder products were successfully developed in Shanghai in 1996. In 2000, the national product standards were officially promulgated. After 2005, domestic enterprises have launched slag powder projects. In June of this year alone, several slag micro-powder start-up and operation projects were striking: Baosteel Development Co., Ltd. chemical production terminal built slag micro-powder vertical mill production line; international advanced slag powder production line was completed and put into operation in Anshan Iron and Steel Co., Ltd.; 600,000 tons of slag powder and so on. The slag micropowder project has small investment, small land occupation, significant benefits, short payback period, and is in line with national energy and environmental protection policies. It is a government-encouraged development project.
Slag powder production line
With the continuous development of slag grinding technology, the slag is ground to the corresponding fineness and the energy consumption is getting lower and lower, which lays a good foundation for the large-scale application of slag powder. The production process mainly includes vertical grinding, roller press, ball mill , vibrating mill, four final grinding processes, or vertical grinding + ball mill, roller press + ball mill combined grinding process, in which vertical mill produces slag powder It is the most common and rapid development, and the fineness of grinding is easily controlled at 400m2/kg or more, achieving the most economical fineness standard and fully utilizing its activity.
The slag micropowder can also be combined with steel slag to produce composite powder, improve the life of the civil structure, and produce high-performance concrete with a certain proportion of other materials such as silica fume, thereby further improving the utilization rate of the slag powder.
Since the production process of slag powder is relatively simple and the required investment is relatively small, the asset size of the slag powder production enterprise is generally relatively small. At the same time, due to the wide application and good performance of the downstream products of slag micropowder, the development space of slag micropowder products is better. Therefore, the development of slag micropowder production enterprises is fast. In recent years, there have been many domestic slag micropowder production enterprises of various scales.
The economic and social benefits brought about by the gradual promotion of slag micropowder production are very obvious, but it is necessary to further strengthen scientific and technological innovation and equipment reform, and thoroughly study the comprehensive utilization of slag micropowder to increase the added value of its products. All in all, slag powder is a building material that has great use value and potential advantages, and has a broad market prospect.
With more than 30 years customers` actual operation and technology improvement, 1500mm two/three/five layers fully automatic stretch film machine is mature and cost-effective, some whole production line adopt melt metering pump technology and high precision pressure sensor system, which can stably and effective to control the pressure. It will highly improves film horizontal and vertical`s tension strength and anti-puncture resistance and make the film meeting the high requirement for machine packing film. The cooling roller adopts big diameter design and special double-decker runner, greatly improving the cooling effect of high-speed production to guarantee good uniformity of cooling roll surface temperature. The film produced by this machine has good shrinking memory function and self-sticky, which can be widely used in wrapping of palletized goods. It`s good substitute for hot shrinking packing film during transportation.
*Related Products:pe casting film machine,pe cling film machine,pe protective film machinery.
Machine Pictures:
Plastic melt metering pump is more and more important in extrusion process, especially in high-end products industries, such as high quality sheets, pipes, BOPP, optical cable.
Installing the melt metering pump in the cast stretch film unit, which can keep the production constantly and efficiency. The pump can improve the product quality, stable the production and decrease the energy consume.
The housing is made of chromium-nickel alloy or nickel-base alloy, titanium alloy. The gear is made of quenching chromium steel, other metal materials are also applicable. Bearing is made of graphite NIAG, zirconium oxide or quench tool steel.
Advantages:
FAST AND STABLE FLOW SUPPLY
Eliminated the extruder`s pulsation wave. Improve the product quality, decrease the defective rate, and decrease the waste, which can save 2% material and 25% of the unit power consumption.
STABLE AND EFFICIENCY PRESSURE CONTROL
The melt pump can provide a stable pressure, which short the discharge time obviously and make the production effectively.
INCREASE THE EXTRUDER OUTPUT AND THE MACHINE LIFE
It has been found that after install the melt pump, the max pressure wave value is the pressure after pump. Which can make the inner pressure of the extruder decrease, the melt shear strength decrease, the temperature curve gently, and restrain the temperature rising. Also the melt pump can avoid the damage to the extruder from the high pressure.
Produced Films
1500mm stretch film machine unit
1500MM Black Stretch Film Machine Unit,1500MM Hand Stretch Film Machine Unit,1500MM Plastic Stretch Film Machine Unit,1500MM Packaging Stretch Film Machine Unit
CHANGLONGXING SCIENCE & TECHNOLOGY (SHENZHEN) CO.,LTD , https://www.clxmachinery.com