The Preparation of Substances Important in Agriculture a Laboratory Manual of S
The Preparation of Substances Important in Agriculture a Laboratory Manual of S
Charles Adams Peters
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Potash is being produced in this country, England and France from the blast furnaces of the steel industry. The limestone, iron ore, and coke used in the smelting may each con- tain some potash; if so during the heating some of this is volatilized. Special devices, electrical precipitators, take the potash-bear- ing dust out of the gases as they pass from the furnaces. Potassium chlorid is the substance obtaind. As there is generally insufficient chlorin to combine with the potassium the amount... of substance volatilized is limited by the chlorin available. The addition of com- mon salt, sodium chlorid, to the furnace charge consequently increases the amount of potash recoverd. It is said that there is sufficient potash available from this source to furnish the entire needs of this country. The cement kilns also volatilize potassium Muriate of Potash 35 chlorid from potash compounds present in the hmestone and sihcates used in their manufacture. The material is very fine and would be lost as '' smoke " if the particles were not charged ^\dth electricity and then caused to deposit on strong electrically charged plates in the Cottrell process of electrical precipitation.
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