Son: **4.*5 

Product characteristics: white to light yellow powder 

Product main indicators: 

Main indicators single electronic level 

Containing amount % *9.0 *8.5 or higher 

Chloride % 0.**2 0.*5 or less 

The iron content % 0.**1 0.*2 or less 

Heavy metals % 0.**2 0.**2 or less 

Water insolubles % 0.5 0.5 or less 

Kali % ****0 or more 

Hygroscopicity is small, not easy to agglomerate, good physical properties, application is convenient, is a good water soluble potash. Potassium sulfate is a chemical intermediate, physiological acid fertilizer. In different soil reaction and matters that should be paid attention to: first, in acidic soil, the excess sulfuric acid root causes soil acidity is aggravating, even aggravate the soil active aluminum, iron poisoning crops. Under flooded conditions, extra sulfate can be restored to generate hydrogen sulfide, change to the root victims to black. So, long-term application of potassium sulfate should cooperate with farmyard manure, alkaline phosphate and lime, reduce acidity, should also be combined with drainage field drying measures in practice, improve ventilation. Second, in calcareous soil, sulfate and calcium ions in the soil is not easy to dissolve the calcium sulfate (gypsum). Calcium sulphate too much can cause soil harden, should pay attention to the quality of farm at this time. Third, mainly used in the avoid chlorine crops, such as tobacco, tea, grape, sugar cane, sugar beet, watermelon, potato and so on increasing potassium sulfate production not only improve, also can improve the quality. Potassium sulfate is potassium chloride is expensive, less supply of goods, should focus on is sensitive to chlorine and sulfur (rapeseed, garlic) xi xi potassium economic crops, benefit will be better. Fourth, the potassium sulfate should be mixed with calcium rich fertilizer application. 

Can be used as a basal, fertilizer directly, and top dressing. 

USES: used as drugs, such as the delay evacuant), fertilizer, potassium by about *0%, is a kind of available k, as a basic fertilizer and seed manure and fertilizer). Also used for making alum, glass and potash, etc. 

Manufacturing: made by sulfuric acid reacts with potassium chloride. 

The production available potassium ore, potassium sulfate or potassium chloride conversion, or by the salt lake brine resources, etc. Common alunite reduction is pyrolysis.