The invention discloses a method for gradient separation of
titanium copper and
titanium silicon from titaniferous
slag through
liquid copper cathode electrolysis, and belongs to the field of electrochemical
metallurgy. The method comprises the following steps of placing
copper powder or
copper blocks at the bottom of a
crucible to serve as a
cathode, and placing the titaniferous
slag above the copper
powder or the copper blocks to serve as an
electrolyte, wherein an
inert electrode or a
graphite electrode serves as an
anode; using high-melting-point metals such as
molybdenum and
tungsten as a conductive rod, and using
silicon nitride,
zirconium oxide and other materials as protective sleeves for wrapping; placing the
crucible filled with the
cathode and the
electrolyte in a high-temperature furnace, and installing the
anode and the conductive rod; and raising the
furnace temperature to be 20 DEG C-100 DEG C higher than the
melting point of the titaniferous
slag, keeping the temperature for 0.5 h-2 h, lowering a cathode conductive rod and the
anode, and carrying out
direct current electrolysis. When the
titanium ion activity in the titaniferous slag is 10%-60%, titanium-
copper alloy can be obtained through
direct current electrolysis; when the
titanium ion activity in the titaniferous slag is 1%-10%, titanium-
silicon alloy can be obtained through
direct current electrolysis; and when the
titanium ion activity in the titanium-containing slag is less than 1%, the electrolysis is stopped. According to the method disclosed by the invention, metallurgical secondary resources are comprehensively recycled through utilizing an electrochemical
metallurgy method; and meanwhile, the operation is simple and the cost is low.