HR Series are a kind of two stage horizontal pusher filtering centrifuge that can be continuously operated, They can perform feeding, separating, washing and discharging in sequence at their full-speed running. They have the advantages of continuous operation, stable performance, large capacity, ideal washing effect, low moisture content of cake and less solid content in the liquid. They are suitable for separating the suspension with solid phase particle size of more than 0.05mm and with the concentration of over 35%, and suitable for chemical industry, fertilizer, manufacturing salt and alkali, especially for the solid-liquid separation of sodium chloride, ammonium chloride, ammonium bicarbonate, sodium sulfate and carbamide.