Abstract. The article concerned the problem of coal preparation for gasification purposes. The main aim was to design the coal crushing circuit, which would produce the material within the particle size range between 0.5 and 5 mm. The one-stage crushing circuit based on hammer crusher was proposed. There laboratory tests of coal crushing in two circuits: one-stage circuit based on a hammer crusher and two-stage circuit based on jaw and roller crushers were also performed. The results showed that application of the one-stage circuit appeared to be more favorable both in terms of energy consumption and, if considered, the product particle size.