【Properties】 the sulfonated coal as black irregular fine grain. A porous structure of absorbent capacity, absorbent volume expansion after expansion coefficient of 110 to 115. Is a cation exchanger. The sulfonic acid groups (-SO3H) is connected to the coal hydrocarbon, and the cation in the water, such as iron, aluminum, calcium, magnesium, sodium, etc., removal of these ions by ion exchange. And may be the acid or sodium salt regeneration. The sulfonated coal is less stable, the highest heat resistance does not exceed 40 ° C temperature. 【Uses】 the sulfonated coal www.ihualong.com is the a cation exchange resin (cation exchanger). Hydrogen sulfonated coal divided into two categories and sodium sulfonated coal. For boiler water, hard water softening, precious metals in waste water recycling and sewage treatment. Sulfonated coal for the boiler to soften water to remove the calcium and magnesium ions. The textile industry for the manufacture of soft water, washing and dyeing fabric to make the fabric soft dyeing the fabric colorful bleached fabric, but also beautiful. The paper industry for the removal of metal cations in water, so that the paper normal color. Can be used to absorb the precious metals and organic acids in the wastewater, and the preparation of low molecular weight silicic acid solution. Also for the catalyst of the desalination agent, organic reactions, such as catalytic ketene, alkylation or dealkylation. The disadvantage of having no heat, low mechanical strength, consuming large switching capacity is small and the regenerating agent, the carbonaceous ion exchange agent has been gradually organic synthetic ion-exchange resin was used instead. Preparation or sources of bituminous coal, lignite after using hair from the treatment of fuming sulfuric acid or concentrated sulfuric acid sulfonated product. The sulfonation reaction of the coal structure on the aromatic ring to introduce a sulfonic acid group (-SO3H); same time, due to the concentrated sulfuric acid oxidation, also an aromatic ring on the side chain alkyl group is oxidized to a carboxyl group (-COOH) and hydroxyl (-OH ). Hydrogen on these groups can be replaced by some metal ions. Sulfonated coal-exchange ability of the size of the metal ions, typically calcium ions can be exchanged milliequivalents per gram or per cc sulfonated coal, typically about 1.6 to 2.0 milliequivalents (calcium) / g (coal). Using the salt treatment sulfonated coal was sodium sulfonated coal, its exchange capacity than hydrogen type higher. Manufacturer's web site: www.ihualong.com www.gyhltl.com