Abstract: The paper describes briefly the development of diaphragm pump, analyzes the structure of diaphragm pump, introduces the application of home-made diaphragm pump in the converter sludge pipeline transport of An Steel Works and in the high-density tailing slurry pipeline transport of Donganshan Sintering Plant and points out that the home made diaphragm pump, when rationally chosen, has a strong competitiveness and good development prospect in long distance, high pump lift and high viscosity slurry pipeline transport.

Key words: Home-made diaphragm pump, Converter sludge pipeline transport, High density pipeline transport of tailings