The present application relates to the technical field of leather making process, and particularly relates to a process for solving the problem of white
frost of leather under high temperature conditions. The water soaking process stage includes fur weighing, fur feeding,
water washing, pre-water soaking, mechanical fleshing, and main water soaking; the liming process stage includes liming, unhairing,
water washing, mechanical fleshing, and
cutting; the deliming process stage includes weighing, fur feeding,
water washing, pre-deliming, main deliming, and
softening; the desulfurization process stage includes desulfurization: adding water with a product
mass ratio of 180-220% and a temperature of 30-35 DEG C in a
rotating drum, rotating for 15 min, draining water, and repeating twice;
sulfur content measurement: liquid detection: dropping 5% dilute
sulfuric acid, liquid
turbidity, repeating desulfurization for treatment, and if the liquid is clear and does not become turbid, it is qualified; acid soaking and chrome tanning process stage: acid soaking, chrome tanning, alkali extraction, water washing, drum discharging, horse mounting, and standing; the problem of
sulfur frost of leather under high temperature conditions is solved, and the
pathogenic factor of white
frost, i.e.
sulfur, is effectively eliminated.