LOI control. LOI is the main indicator of the carbon content in fly ash, should be considered first. Generally, the LOI should be controlled below 15%. When the amount is less than 50% ash, may be relaxed to 20%. LOI greater than 20% of the carbon content of fly ash due to excessive unburned frost harmony poor durability, the principle can not be used in the production of unburned. Therefore, excessive LOI fly ash should not choose brick.

      Fineness control. General fineness of fly ash, 455m square hole sieve not more than 25% in order to make it work gelation. To have about 10% finer Some particularly desirable.

This part of the fine ash 455m square hole sieve is not greater than 10% as well, it can play a greater intensity of effect.

      Control of sulfur trioxide. Fly ash used in making unburned, for the control of sulfur trioxide may be relaxed, generally not more than 4% can be.

      Free calcium oxide controls. For fly ash concrete, cement admixture, the free lime is very strict control in order to facilitate its stability. However, due to the production of unburned also plus lime, and there is an aging process, allows the expansion of free calcium oxide is released, so it is not much harm, do not be too strict control. In addition to the general high calcium fly ash do not have to control the content of free calcium oxide.

      Water demand than the controls. Water demand for the production of fly ash unburned than, do not like that too strict control for concrete, generally not more than 120% can choose to use.

      Stability control. Since unburned after a aging process ingredients, generally unstable factors in the aging process will be eliminated to, therefore, its stability control can also be slightly loose some, the increased distance between Reye clip boil , not greater than 5.5 can choose. This is easy to achieve for most of ash.

      Moisture control. Fly ash used in cement and concrete, to control the water content of <1%. For unburned, you do not demanding. Generally dry ash and wet ash can be used. As long as the water content of the wet ash <10%, can be used for the production of unburned. Water content> 10% of the wet ash should be stacked dehydration.

      Strength activity index control. From the intensity and cost considerations bricks, fly ash strength activity index course, the bigger the better. However, higher activity index are high quality gray ash for brick-making is not the economy, in the actual production is impossible. Therefore, fly ash used in making unburned, the strength activity index of not less than 50% can be. Wherein the active part of the index can fly higher, not less than 80%, in order to ensure the strength of unburned, this part may fly ash 10% -30% of the total.

      Shandong Sheng Machinery Co., Ltd. has been dedicated sub-cement products machinery research and development, production and sales, with advanced equipment, superb technology and two years of professional experience, the company has always been at the forefront of research and development center block making machine market development , watching the advanced technology at home and abroad, to develop products for the investment needs of different users, there are block making machine, hydraulic tile machine, cement pipe machine, blender, hanging roller machine, wire rod machine equipment. Currently has 19 branch offices and six foreign countries (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported to more than 100 countries and regions.