Preparation method of deslagging agent

The invention discloses a preparation method of a deslagging agent. The preparation method of the deslagging agent relates to the technical field of casting. The deslagging agent is prepared from the following raw materials in parts by weight: 62 to 72 parts of silicon dioxide, 10 to 15 parts of aluminium oxide, 2 to 3 parts of potassium oxide, 2 to 3 parts of calcium oxide, 1 to 2 parts of sodium oxide, 1.5 to 2.5 parts of ferric oxide, 0.5 to 0.8 part of magnesium oxide, and 0.02 to 0.03 part of titanium dioxide. The preparation method comprises the following concrete steps of A, weighing the raw materials, and smashing for standby use; B, putting the silicon dioxide, the aluminum oxide, the potassium oxide, the calcium oxide, the sodium oxide, the ferric oxide, the magnesium oxide and the titanium dioxide into a stirrer, and uniformly mixing; and C, sieving the obtained mixture through a 160 to 200-mesh sieve screen. Compared with the prior art, the deslagging agent provided by the invention can be used fo