Abstract: A method and system for rapidly preparing lithium carbonate or concentrated brine using high-temperature steam. The method comprises the steps of: feeding brine into a reactor, heating the brine with high-temperature steam above 200° C. while simultaneously discharging steam produced in the reactor, cooling and condensing the discharged steam in a condenser and collecting the condensate, and stopping the high-temperature steam after the brine is concentrated to a predetermined concentration or after a sufficient amount of lithium carbonate is collected. The system comprises: a reactor provided with a brine inlet, a steam outlet connected to a condenser, a product outlet, and a plurality of steam pipes. The method concerns the direct heating of brine using high-temperature steam, which is effective and efficient, and also produces fresh water. The heating is uniform and rapid, and does not require jackets, heat exchange tubes, mixers and vacuum pumps, vastly simplifying the system.

Abstract: A method for accelerating evaporation of brine in plateau salt lakes includes introducing downward wind to a brine surface; and changing the downward wind to transversal wind horizontally flowing outward when the wind contacts with the brine surface, to accelerate evaporation of the brine. Said method is simple in operation, can accelerate the evaporation of the brine, and can realize industrialized brine production at low cost. It is less prone to form salt deposits in concentrated brine, and is also easy to separate salt crystals precipitated from brine. Said device has a simple and reliable structure; low costs for the manufacture, use, and maintenance thereof; and improved evaporation of brine. Said device is convenient to be used in plateau salt-lake regions and easy to be relocated and with a minimal contact area with brine, it is essentially impossible to form salts deposits on the surface of the device.

Abstract: A method and system for rapidly preparing lithium carbonate or concentrated brine using high-temperature steam. The method comprises the steps of: feeding brine into a reactor, heating the brine with high-temperature steam above 200° C. while simultaneously discharging steam produced in the reactor, cooling and condensing the discharged steam in a condenser and collecting the condensate, and stopping the high-temperature steam after the brine is concentrated to a predetermined concentration or after a sufficient amount of lithium carbonate is collected. The system comprises: a reactor provided with a brine inlet, a steam outlet connected to a condenser, a product outlet, and a plurality of steam pipes. The method concerns the direct heating of brine using high-temperature steam, which is effective and efficient, and also produces fresh water. The heating is uniform and rapid, and does not require jackets, heat exchange tubes, mixers and vacuum pumps, vastly simplifying the system.

Abstract: The present invention discloses a method for quickly extracting lithium carbonate from saline lake water and a system for the same. The method comprises: first quick-freezing the saline lake water to obtain lithium-rich brine, then evaporating under reduced pressure to enable lithium carbonate to be rapidly precipitated out. The method has advantages of short process flow and less labor consumption, thereby enabling continuous automatic operation, high energy utilization and environment-friendly. Further, the crystallization rate is several times faster than that of the salt-pan process and the grade of lithium carbonate salt mine obtained can reach 95% or more, therefore the method of the present invention is particularly suitable for industrial production in the remote saline lake region.

Abstract: The present invention discloses a method for quickly extracting lithium carbonate from saline lake water and a system for the same. The method comprises: first quick-freezing the saline lake water to obtain lithium-rich brine, then evaporating under reduced pressure to enable lithium carbonate to be rapidly precipitated out. The method has advantages of short process flow and less labor consumption, thereby enabling continuous automatic operation, high energy utilization and environment-friendly. Further, the crystallization rate is several times faster than that of the salt-pan process and the grade of lithium carbonate salt mine obtained can reach 95% or more, therefore the method of the present invention is particularly suitable for industrial production in the remote saline lake region.

Abstract: The present invention discloses a method for quickly extracting lithium carbonate from saline lake water and a system for the same. The method comprises: first quick-freezing the saline lake water to obtain lithium-rich brine, then evaporating under reduced pressure to enable lithium carbonate to be rapidly precipitated out. The method has advantages of short process flow and less labor consumption, thereby enabling continuous automatic operation, high energy utilization and environment-friendly. Further, the crystallization rate is several times faster than that of the salt-pan process and the grade of lithium carbonate salt mine obtained can reach 95% or more, therefore the method of the present invention is particularly suitable for industrial production in the remote saline lake region.

Abstract: The invention discloses a preparation method and system of high purity lithium carbonate. The preparation method comprises: concentrating carbonic acid type salt lake bittern, then heating up to saturate, crystallize and separate out the lithium carbonate, and collecting crystals to obtain refined salts of lithium carbonate; flushing the collected refined salts of lithium carbonate with distilled water with a temperature above 60° C. to dissolve sodium-potassium salts therein; drying to obtain the high purity lithium carbonate. For the lithium carbonate purification process, chemical reagents are not needed, the refining and purification of the lithium carbonate may be finished by physical operation, the purification of the refined and purified lithium carbonate is up to above 95%, which is beneficial for reducing the transportation cost at the later stage and the further purified cost. The process has an extremely low requirement for transportation and does not contaminate the environment at the same time.

Abstract: The invention discloses a high efficiency thermal energy recovery method and system, and a high temperature concentrated solar thermal collector. A concentrated solar photo-thermal device is used to heat heat-transfer oil to a high temperature and the oil is used for rapid heat replenishment for decompressing evaporation. Multiple methods are also used to recover thermal energy so as to recover a large part of thermal energy in a production process, thereby enabling the continuous production in plateau areas, reducing the electricity consumption, lowering the capacity of photovoltaic power stations, and reducing the fixed investment.

Abstract: The present invention discloses a method for quickly extracting lithium carbonate from saline lake water and a system for the same. The method comprises: first quick-freezing the saline lake water to obtain lithium-rich brine, then evaporating under reduced pressure to enable lithium carbonate to be rapidly precipitated out. The method has advantages of short process flow and less labor consumption, thereby enabling continuous automatic operation, high energy utilization and environment-friendly. Further, the crystallization rate is several times faster than that of the salt-pan process and the grade of lithium carbonate salt mine obtained can reach 95% or more, therefore the method of the present invention is particularly suitable for industrial production in the remote saline lake region.