1. The raw materials and technical requirements (1) for the production of sand-lime brick sand sand, can be mountain sand, river sand, aeolian sand Hankou sand-lime brick manufacturers, can also be crushed rock or artificial sand casting industrial use waste sand. But either use sand to build sand-lime brick Hankou, should meet the following requirements. ① sand silica content of greater than 65% ② sand clay content should be less than 15% ③ sands hydroxide, sodium oxide shall not exceed the total amount of 2.5% ④ sand should not contain gravel, roots, bark, etc. organic impurities .⑤ sand moisture content shall not exceed 6%. brick is made of fired clay by, is in the firing process the clay is not completely oxidized iron Low iron, and iron is cheap it was blue Hankou sand-lime brick Which is good, this is what we call the origin of brick. Brick plasticity is very strong, it is often embedded in the brick wall to relief, engraved traditional Chinese culture sand-lime brick, the brick highly collectible, tasting value. Brick addition to the advantages of the above said, there is a most useful is to repair old buildings, because of the unique color of the brick has a return means, run heart cultivation, so now mostly used antique brick building. Wholesale Hankou sand-lime brick, cement pavilion (certified), Castle sand-lime brick by Hongshan District of Wuhan pavilion cement operation. Hongshan District of Wuhan pavilion cement business unit (www.whltsn.com) (www.hbltsn.com) was Wuhan, cement and products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Cement leader in the pavilion with the staff warmly welcome all inquiries negotiations to create a better future for cement pergola.