Wind reduction is the best method for refining titanium products, but it is not suitable for titanium products for long periods of time. Wind reduction and low pressure do not exceed 2 hours. In order to compensate for the lack of heat for the furnace charge and to prevent the furnace from cooling, the titanium product must be lightly coke charged, depending on the depth and timing of the feed line, and usually a light coke charge of 10% to 30%. Equipment problems; reduce the wind to the lowest level promised by the blast, only the tuyere does not come to slag.