Shandong Shengya Machinery Co., Ltd. specializing in the production of various types of brick, brick machine, brick machine, hollow brick, pavement brick and other equipment of the old brick factory.
     So, the production of unburned brick, raw materials have to choose which requires it?
1, use sand as unburned material is very extensive, often with mountains of sand, river sand, aeolian sand, it can also be manufactured sand or industrial foundry sand waste rock crushed, but either sand use, shall meet The following technical requirements. Use coarse particles and uniform particle size of sand or a particle size less than 0.075m of special sand.
2, lime nbsp; quality directly affects the quality of unburned lime should be used wherever possible high in calcium, digestion speed, high temperature digestion of lime, the specific requirements are as follows: CaO content gt; 60%; MgO lt; 5%; the rate of digestion lt; 15min; digestion temperature gt; 60 ℃; burned lime lt; 5%; lime lt; 10%, powdered ash lt; 10%.
3, cement: 10% incorporation of 425 # ordinary portland cement, brick can improve the strength and water resistance without cracking ,, after flooding. Otherwise, there will be general brick cracking phenomenon.
4, the admixture: the incorporation of a small amount of additives (booster), apart from increasing the strength of brick sclerosis, but also reduce the amount of cement, reduce product costs.
5. Water: water appropriate strength bricks high. Forming less water, the difference between the strength of brick, the material in the mold resistance, single-sided pressure is not dense brick bottom surface; forming more water, the bottom surface of moist, easy to break something when the mold. When the sand moisture content of 3-5%, water consumption by 10% during molding is appropriate. If the raw material sand too, is reduced to 8%. Select unburned material is very important so that the bricks can be produced and strong and beautiful.
6. Clay: To contain a certain amount of loose particles in order to facilitate mixing cement, sand a small amount of clay, can be equipped with sand in the soil. Less sand and hard clay, after adding sand to be milled.
    Shandong Shengya Machinery Co., Ltd. has been committed cement products machinery development, production and sale of advanced equipment, superb technical expertise and two decades of experience, the company has always been at the forefront of research and development center block molding machine market development Follow the advanced technology at home and abroad, to develop products for different investment needs of users, mainly block making machine, hydraulic tile machine, cement pipe machine, mixer, hanging roller machine, telephone poles machine equipment. At present the country with 19 offices and six overseas plants (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported more than 100 countries and regions.