Method for producing nickel-iron particles by using coal-based reducing agent to directly reduce laterite nickel ore

The invention discloses a method for producing nickel-iron particles by using a coal-based reducing agent to directly reduce laterite nickel ore, belongs to the technical field of metallurgy chemical engineering, and concretely relates to a method for producing nickel-iron particles by utilizing a rotary kiln to directly reduce laterite nickel ore. The method comprises: drying laterite nickel raw ore, adding coal and additives, mixing, performing dry grinding, and preparing balls; pre-heating, then sending into the rotary kiln and performing reduction calcining; performing water quenching on materials discharged from the kiln, then performing fragmentation and fine grinding, and then performing jigging separation, so as to obtain the nickel-iron particle product, and separating a magnetic material from a tail ore part discharged from a jigging machine by using a magnet separator, returning to the kiln for reutilization. Waste heat of the tail gas of the rotary kiln is used to perform preheating drying on the raw material. The method has the characteristics of simple production, convenient operation, low energy consumption, environment friendliness and high nickel-iron recovery rate.