Potassium nitrate purification equipment

• Main Authors: LI QINGCHUN, YE LVGU, WANG RUWEN, LIU SHENGHUA
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2014
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY

The utility model relates to the technical field of purification equipment, in particular to potassium nitrate purification equipment. The potassium nitrate purification equipment comprises a heating and dissolving tank, a crystallizing tank and a conveying pipeline, wherein a heating device is arranged in the heating and dissolving tank; the water inlet of the conveying pipeline is communicated with the bottom of the heating and dissolving tank; the water outlet of the conveying pipeline is communicated with the top of the crystallizing tank; a filter screen is arranged in the crystallizing tank. Low-purity potassium nitrate used in a chemical tempering process is added to the heating and dissolving tank according to a certain weight and proportion and then is heated to 100 DEG C so as to be completely dissolved; the potassium nitrate solution is conveyed to the crystallizing tank with the filter screen through the conveying pipeline for cooling crystallization; the crystal obtained through the cooling cryst