Most of proppant materials prepared by LAS, additives can reduce fracturing proppants the sintering temperature fracturing proppant. Studies have shown that: Additive at lower temperatures can promote liquid phase is generated, or a reaction with Al2O3 solid solution, to improve the sintering activity. The most commonly used additives are mainly manganese powder, barium carbonate, calcium carbonate, dolomite, chromite and so on. In the high-temperature sintering manganese ore and manganese ions are easy to replace aluminum ion, the lattice variation, thus promoting sintering, its amount is generally 1% to 3% is appropriate; barium and calcium carbonate in high temperature sintering process will monoclinic barium feldspar and anorthite Dan Shengcheng, both to protect the other components of the product from acid erosion, which amount to 3% to 5% and 1% to 2% is appropriate; dolomite at high temperatures can promote liquid generate, promote sintering, while also promoting corundum precipitated on the surface of secondary mullite crystals, improve the sintering properties of the sample, is generally added in an amount to 2% to 3.5% is appropriate; chromite sintering temperature can be reduced, promoting fracturing proppant mullite phase formation, the amount of chromite corundum grains will promote development, increase density, improve strength, it is generally added in an amount of 1% is appropriate.