121 results about "Evaporation pond" patented technology

The invention provides an in-situ leaching uranium mine wastewater evaporating device and an in-situ leaching uranium mine wastewater evaporating method. In-situ leaching uranium mine wastewater in an evaporation pond is lifted into the evaporating device by using a submerged pump, and the wastewater temperature is controlled at 10-20 DEG C; in the evaporating device, the wastewater enters a liquid distributing pipe, is uniformly sprayed onto a base material through liquid distributing holes in the liquid distributing pipe and is evaporated; 20-30min later, the wastewater adsorbed onto the base material is completely evaporated, and next wastewater spraying is started; the wastewater coming out of the evaporating device reflows into the evaporation pond. The in-situ leaching uranium mine wastewater is uniformly distributed onto the base material through lifting of the submerged pump, and under the action of wind energy or solar energy, evaporation of the wastewater is accelerated, so that the evaporation efficiency is improved, the difficulty that the wastewater in the evaporation pond is difficult to treat and accumulate is overcome, and the economy and reasonability are relatively good.

The invention relates to a harmless treatment method of drilling mud produced by in-situ leaching uranium exploration. According to the method, radioactivity monitoring is carried out in a mud drilling process. The harmless treatment method comprises the steps of pumping non-ore-bearing strata mud into a mud pit by using a mud pump, and adding a flocculating agent into the mud pit at the same time; carrying out solid-liquid layering on the mud, and then gradually discharging supernatant liquor into a sewage purifying pond; adding a purifying agent into the sewage purifying pond for carrying out purification treatment. The harmless treatment method also can be implemented by the following steps: dividing ore-bearing strata mud into coarse sand mud and fine sand mud by means of filtering pretreatment; removing the sand of the coarse sand mud by a vibration desander, and then dividing the mud without the sand into solid phase mud and liquid phase mud; adding the flocculating agent into the fine sand mud for carrying out solid-liquid separation to separate the find sand mud into solid phase mud and liquid phase mud; carrying out plate-frame pressure filtration on the solid phase mud and then sending the mud into an evaporation pond; adding the purifying agent into the liquid phase mud and then preparing into mud for recycling. The harmless treatment method is used for recycling the mud by means of solid-liquid separation, purification and the like, and is capable of respectively and reasonably treating the radioactive mud and non-radioactive mud at the same time, thus having better economy and rationality.

The invention discloses a mining method of solid potash ores. The method comprises the following steps: (1) mixing a diluted tail halide solution with solid potash ores, wherein the mass percent of magnesium chloride in the diluted tail halide solution is 22.5%-27%; the content of sodium chloride is not higher than 1%; the content of sodium chloride in the solid potash ores is 48%-79%; the content of magnesium chloride is 1%-4%; and the potassium content based on the mass percent of potassium chloride is lower than 1%; (2) mixing the diluted tail halide solution with solid; and (3) separating brine which absorbs potassium ingredients in the solid ores from a solid layer, introducing into an evaporation pond, evaporating by virtue of natural energy sources such as solar energy and wind energy, and introducing upper brine into another evaporation pond to further evaporate and separate out solid and liquid after the proportion of the brine is 1.24-1.26. Carnallite is prepared from waste tail halide and ultralow-grade solid potash ores, and meets the requirements of circular economy reduction, recycling and resource utilization; and the mining method has a wide application prospect in development of a salt lake potassium resource.

A method for increasing the evaporation rate of an evaporative pond containing pond liquor comprising water and at least 1% by weight of sodium carbonate, said evaporative pond being in contact with an ambient air at an ambient air temperature of more than 0° C., the method comprising the following steps: feeding part of the pond liquor to a heat exchanger; heating the pond liquor in the heat exchanger with heat and producing a heated pond liquor; feeding the heated pond liquor into a spraying device at an operating temperature of at least 10° C. above the ambient air temperature; and spraying the heated pond liquor into an open area of the evaporative pond with the spraying device, so as to evaporate at least part of the water of the pond liquor when sprayed.