cement making process and machineries
Process and Technology to Making Fiber Cement, Non Asbestos fiber semen technology About 120 years ago, Ludwig Hatschek made the first asbestos reinforced cement products, using a papermaking sieve cylinder machine on which a very dilute slurry of asbestos fibers (up to about 10% by weight of solids) and ordinary Portland cement (about 90% or more) was dewatered, in films of about mm