After many times of renovating design, MTZ steel ball coal mill fully adopts the double-inlet & double -outlet coal mill technology, the product is widely used for coal pulverizing system pulverized coal preparation in the industries of power, metallurgy, building material, chemical and environment protection etc, especially applicable for the bituminous coal, meager coal with the poor grindability and negative-pressure pulverizing system of bituminous coal.
 
After multiple renovating designs, MTZ steel ball coal mills manufactured by NHI have the advantages of less land occupation, low electricity consumption, steady running, easy operation, long service life of wearing parts and widely used for pulverized coal preparation system in the industries of power, metallurgy, building material, chemical and environment protection etc. The product is especially applicable for the pulverized coal preparation system. MTZ steel ball coal mills as the competitive products of NHI in the last century have high market share in domestic market with thousands of productions.