Tungsten-based delay powder for detonator and use of tungsten-based delay powder

The invention relates to a tungsten-based delay powder for a detonator and a use of the tungsten-based delay powder. The formula of the tungsten-based delay powder mainly comprises barium chromate, tungsten powder and potassium perchlorate, and as the circumstances may require, extra calcium fluoride and diatomite can be added; the components of the formula are manually mixed together in a certain ratio, the mixture is further mixed for 4 hours in a ball mill, and then the mixed delay powder is put in a lead tube having the diameter of phi10 to phi16, next, the steps of sleeving, rolling, drawing and lead cutting are carried out, and finally, the tungsten-based delay powder for the detonator can be obtained; the tungsten-based delay powder is further prepared into a cylinder core having the diameter of 2mm, a middle layer made of pure lead is arranged to sleeve the cylinder core, an outer layer made of a lead-antimony alloy is arranged to cover the middle layer, and then a one-section lead delay element for t