What's The Difference Between Vertical Shaft Kiln & Rotary Kiln?

Rotary kiln is a round shape cylinder with refratory material liner, working with low rotary speed, used for calcination cement clinker equipments. It has a certain inclined degree, installed on many pair of supporting legs, driven by motor or hydraulic pressure, making the cylinder rotating at a certain speed scope. Raw material feeding from top port(kiln tail) to bottom port(kiln head). Fuel blowing to the kiln from bottom port, produce flame, calcination the raw material to clinker. Gas exhaust from kiln tail. Rotary is the main equipment in cement industrial. Cement industrial has different production method and different type rotary kiln, according to raw material making methods, it can be divided to dry type production and wet type production. 1. Wet type rotary kiln: using wet method produce cement, feeding water into the raw material making it become humidity 32-40% slurry. As preparing a slurry having fluidity, so, it's better for raw material mixing uniformly, has advantage of outlet calcination clinker with high quality. 2. Dry type rotary kiln: crush the raw material to dry powder, with generally less than 1% humidity, so, compare with wet type rotary kiln, no need heat valuable to evaporation steam. But fluidity is worse than slurry, so, with bad raw material mixing & inhomogeneity.
Cement vertical shaft kiln has two types: general vertical shaft kiln and mechanical vertical shaft kiln. General vertical shaft kiln working process: manual feeding material and manual discharging products or mechanical feeding material and manual discharging products. Mechanical vertical shaft kiln is continous working, it's quality and working efficiency is better than general vertical shaft kiln. According to construction technology requirements. Small cement production factory using mechanical vertical shaft kiln, replace general vertical shaft kiln progressively. We have already researched new generation vertical shaft kiln, completely control by computer, LED shown each property index and convenient to operate. Compared with organic shaft kiln, energy-saving, high efficiency, low cost. Now the capacity can reach about 45t/d, but the organic vertical capacity is about 20t/d by the same heat valuable. Outlet products can be tabular corundum, mullite, spinel, calcium aluminate cement, etc.