192results about "Lithium sulfates/sulfites" patented technology

The present invention is directed to a novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern. The process requires bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the bittern, and is converted to schoenite which is subsequently reacted with muriate of potash (MOP) for its conversion to SOP. End liquor from kainite to schoenite conversion (SEL) is desulphated and supplemented with MgCl2 using end bittern generated in the process of making carnallite. Decomposed carnallite liquor produced is reacted with hydrated lime for preparing CaCl2 solution and high purity Mg(OH)2 having low boron content. It is shown that the liquid streams containing potash are recycled in the process, and the recovery of potash in the form of SOP is quantitative.

The invention discloses a lithium ion battery and a positive electrode material thereof. The general chemical formula of the positive electrode material of the lithium ion battery is LiNixM[1-x]O2, wherein x is greater than or equal to 0.5 but smaller than 1; the M is one or more of Co, Mn, Al, Mg, Ti and Zr; the specific surface area of the positive electrode material of the lithium ion battery is 0.2 to 0.6m<2> / g; the surface lithium residue quantity is 200 to 1000 ppm. Compared with the prior art, the positive electrode material of the lithium ion battery is prepared through solid phase reaction; the surface lithium residue quantity of the material can be obviously reduced; the specific surface area increase of the positive electrode material of the lithium ion battery in the reaction process can also be avoided. The circulation stability of the positive electrode material of the lithium ion battery is good; the preparation method is simple; the implementation is easy; the production cost is low; good application prospects are realized. The invention also discloses the lithium ion battery.

The invention discloses a method for preparing lithium salt ore from plateau sulfate type salt lake brine. The method comprises the following steps of: evaporating sulfate type salt lake brine to be in the sodium chloride saturated state, freezing in winter to separate out mirabilite, and carrying out solid-liquid separation when the content of the sulfate ion in the brine is controlled to be 1g / L to 7g / L; evaporating the brine from which the mirabilite is separated out, so as to separate sodium chloride; evaporating the brine from which the sodium chloride is separated out, so as to separate out sylvine, carnallite and epsomite, carrying out solid-liquid separation when the lithium ion concentration in the brine is controlled to be greater than or equal to 6g / L, wherein the brine subjected to solid-liquid separation is the brine with high magnesium chloride content; mixing the brine with high magnesium chloride content with the mirabilite to react so as to separate out sodium salt and magnesium salt, and carrying out solid-liquid separation when the magnesium-lithium ratio in the solution is controlled to be less than or equal to 8:1, so as to obtain boron-lithium-rich brine; and reacting the boron-lithium-rich brine with water to separate out boron rock, carrying out solid-liquid separation so as to obtain lithium-rich brine; and introducing the lithium-rich brine into a lithium salt pool, and evaporating so as to separate out the lithium salt ore.

The process concerns hydrometallurgical processing of manganese sulphate and manganese dithionate containing liquors and recovery of water therefrom. Sodium sulphate and / or sodium dithionate containing liquors are derived from manganese sulphate and manganese dithionate containing liquids, which are then cooled to produce crystals of sodium sulphate decahydrate and sodium dithionate dehydrate. The sodium sulphate decahydrate and sodium dithionate dehydrate crystals are then heated to a temperature sufficient to decompose the sodium sulphate decahydrate crystals to form anhydrous sodium sulphate crystals, sodium dithionate hydrate crystals and water, after which water is removed from the sodium sulphate and sodium dithionate hydrate crystal. The sodium sulphate and sodium dithionate dehydrate crystals are then heated to form anhydrous sodium sulphate, sulfur dioxide and water or steam. The anhydrous sodium sulphate is then separated from the sulfur dioxide and water.

A method of making a cesium salt is described and involves reacting a cesium sulfate containing solution with lime to form 1) a solution containing at least cesium hydroxide and 2) a residue comprising calcium sulfate. The method further involves removing the residue from the solution and converting the cesium hydroxide that is present in the solution to at least one type of cesium salt. The present invention further relates to uses of the cesium salt as well as methods of making cesium hydroxide using lime. Also, methods of making alkali metal salts and alkali metal hydroxides are also described.

The present invention provides a process for recovering Li values from a sodium saturated brine. The process includes recovering Li values from a sodium saturated brine which contains LiX. The process includes concentrating the sodium saturated brine to at least 9000 mg / l LiX, passing the concentrated brine through a bed of polycrystalline hydrated alumina pellets until the pellets are loaded with LiX from the concentrated brine, displacing brine held-up in the bed by using concentrated NaX, unloading LiX from the pellets by flowing through the bed an aqueous solution of LiX which is not saturated, displacing the LiX from the bed using concentrated NaX, and repeating the steps at least one additional time to provide the Li values.

The invention provides a preparing method of an iPS cell, which includes the following steps: step 1, introducing one or many stem cell pluripotent sex factors into a somatic cell; step 2, adopting the medium added with lithium to cultivate the somatic cell introduced with the stem cell pluripotent sex factors in the step 1; and step 3, identifying the cloning of the iPS cell. Furthermore, the invention also provides a medium for preparing the iPS cell, wherein the cell further includes lithium. The lithium-contained medium is applied to efficiently generating the iPS cell. In the invention, the lithium can improve the generation efficiency of the mouse iPS cell to be 5 to 60 times. The efficient iPS cell inducing method is highly significant in improving the iPS technical safety and applying the iPS cell to the field of regeneration medicine.