News Date:2016-10-31 13:16:50
In recent years, the southeast Asian countries accelerate industrial structure adjustment, infrastructure construction be in the ascendant, the industrialization, the urbanization process fast push, especially in Indonesia is flourishing demand for steel, this year is expected to more than 15 million tons, up nearly 10% on the previous year, and by 2025 the number will reach 26 million tons.
Indonesia's urban construction in the future, infrastructure construction and industrial development with unlimited business opportunities, will be followed by a new cement market demand. Due to the impact of the global financial crisis, coalmine, nickel ore and other mineral resources decline, the market weakness in mining, cement prices are falling, the cement industry to save costs is imperative. Currently Indonesia mineral slag, nickel slag and iron slag, processing is still in its infancy, almost no processing, some of them used for reclamation or fill the crater. Without any disposing, they will case the raise dust and pollute the air, silt the river. The toxic chemicals in them will even harm human and animals health.
It is said that the utilization rate of steel slag for some developed countries reach 60%. For example, French and Canada use steel slag as ballast of railway. Japan and Germany use steel slag as cement raw material. Some countries of Western Europe extract the calcium, silicon, manganese and microelement in steel slag use as fertilizer, and all of those make steel slag re-apply in life, the problems of difficult stacking and environmental pollution are solved completely.
On 10th November, 2015, Chairman of Indonesia Growth Steel Group, Mr Su came to Chaeng (Xinxiang Great Wall machinery co., LTD.,)had made final inspection and signed about 300,000 t/y of nickel slag production line project, the chairman of Xinxiang Great Wall, Jizhong Wong had taken on a grand reception. This cooperation, also indicates Xinxiang Great Wall mineral slag, steel slag and nickel slag -turnkey project grinding lines go abroad to the world again.
With people’s knowing about the slag performance and economic value, now many cement and concrete enterprises start to produce and use slag. The activity slag used in cement production can replace large amount clinker, used in concrete can replace large amount cement and improve the concrete performance. It can lower the production cost and save energy.
As we all know, the cement additives surface area is 350～500m²/kg, concrete is 420～600m²/kg, some even over 800m²/kg. Research shows that when mix the fineness over 500m²/kg slag into the concrete, can save 20%~30% cement. It can lower the production cost and improve the concrete’s strength, work ability and durability. No matter used as cement additives or concrete additives, the basic conditions for slag is their fineness.
Mineral Slag
Mineral slag is the waste slag discharged from blast furnace during pig iron smelting. It could be concrete admixture after milling process.
Nickel Slag
Nickel slag is the solid waste generated by smelting nickel iron alloy. The nickel iron alloy is the main raw material for stainless steel.
Steel Slag
Steel slag is the waste residue in the process of steel making, including converter slag and electric furnace slag, approximately takes 15-20 percent of crude steel capacity.
Manganese Slag
Manganese slag is the waste of smelting Manganese. It could be the material of silicon manganese alloy after milling process.
The Advantages of Slag Powder/ Steel Slag Powder Production Lines
1. Considerable Investment Returns, 1-2years Payback Period
The widespread use of slag powder brings in its wake an increasing market demand for slag powder production equipment. Investing in this business can get you rewarded with considerable profits on an annual basis. Generally speaking, it would take 1 to 2 years to recoup money spent on the project.
2. High Productivity and Energy Efficiency
GRMS series vertical roller mill is thought of as the heart of a complete slag powder production line. It helps reduce power consumption by 20% to 30%. Slag powder produced by our line generally has a specific surface area of 4200-4500cm²/g, which meets the particle fineness and size distribution requirements. They are ideal admixtures for a variety of Portland cements.
3. Mature EPC Solution
Apart from advanced production equipment and a great team of technical specialists, we also tie up with chief experts from Chinese vertical roller mill industry in a joint effort to develop the GRMS53.41 series slag vertical roller mill. Depending on your needs, we can tailor-make a detailed solution for design engineering, raw material procurement, and project construction.
4. Numerous Domestic and Foreign Customers Case
We have been receiving good reviews from customers across the country since the day our production line was put into service. Thus far, we have sold out over 40 slag powder production lines, such as the slag powder EPC line with annual production of 1 million ton for Henan Meng Electric Group, the mixture powder ECP production line with 0.9million annual production for one Ningbo customer and 40 more slag powder EPC subjects of 0.6/0.3 million annual production in Guangzhou, Guangxi, Shandong, Shanxi, Hebei, Henan, Liaoning, Neimeng etc.
5. Off-Gas Emission and Noise Level in Line with National Standards
Measures are taken to make certain that our production line meets the GB4915-2004 standards for dust emission and GB12348-2008 standards for noise control. The purpose of our effort is to ensure the emission of any environmental pollutants meets related national standards and its impact on the surroundings would be reduced to minimum.
6. Low Electricity Usage
Innovations in techniques allow us to produce an energy-efficient vertical roller mill that can effectively crush the glass structure of the slag between layers. Usually, less than 43KWh of electricity is used for grinding 1 ton of slags to a specific surface area of 4200-4500cm2/g. Its electricity usage is much lower than the average level in this industry, which greatly helps reduce production cost.
7. The advantage of the fastest delivery
Our company possesses the large scale Steel Casting Room and very great Mechanical Processing ability for undertaking all kinds of casting parts or equipment orders. With the assurance of the high quality, a vertical roller mill can be promised to delivery in 4-6 months. Meanwhile, the production cycle for a complete set of production line is as short as 6-8 months.
