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filtrate and wash solution were analyzed. Evaporation of the combined filtrate and wash solutions resulted in 99.6-pct recovery of LiCl containing 0.08 pct CaC12 • Additions of oxalic acid up to 1.9 times the stoichiometric requirement did not improve calcium precipitation. LITHIUM RECOVERY FLOWSHEET A flowsheet containing the treatment steps shown in figure 8 was devised. Brine returning to the injection well of a power generation facility is treated with lime to remove Fe, Mg, Mn, Pb, and Zn. The lithium is precipitated by add- ing ACH and lime slurry. After solid- liquid separation, the brine is acidified to its original pH and returned to the injection line. The Li-AI precipitate is dissolved in HCI and sparged to separate the aluminum as ACH, which would be returned to the lithium precipitation step. The aluminum-free lithium solution is distilled to recover gaseous HCI for recycle to sparging. The distillation residue is dried and leached with THF to remove the bulk of the calcium and reject other impurities, such as boron and po- tassium. LiCI, recovered by evaporating the THF, is dissolved in water and treat- ed with oxalic acid to remove remaining calcium. The purified lithium chloride solution would contain 330 giL LiCl and would be 99.9 pct Li. Each unit operation resulted in at least 95-pct lithium recovery. The over- all recovery from the brine was 89 pct. Exit streams, other than LiCl and lithium-depleted brine, are the bulk metal hydroxides, CaC12 , and calcium oxa- late. Reagents consumed are HCl, lime, ratio of aluminum to lithium is large, and oxalic acid. A preliminary cost the quantity of HCl required per pound of evaluation (16) showed that the cost of recovering LiCl was $2.99 per pound, in- cluding capital and operating costs. A selling price of $3.70 would be needed to realize a 15-pct return on investment. would decrease the amount of HCI needed Major cost items were $1.30 for HCI and for dissolution. Calculations of the $0.63 for fuel oil for spray drying. resultant change in reagent requirements show that the cost of recovering LiCl The largest cost factor in LiCI recov- would be decreased by $0.20 per pound. A ery is consumption of HCl during dissolu- larger savings could be realized if tion of the Li-AI precipitate. Since the the recycled ACH could be partially Bulk metals hydroxides PosHlash brine Li-AI precipitate Purified Liel FIGURE 8... Flowsheet for lithium chloride recovery. LiCI is large. Figure 2 shows that a 25- pct decrease in AIC13 addition results in a 10-pct decrease in lithium precipi- tation. The smaller quantity of aluminum HCI Calcium oxalate Brine to injection 11PDF Image | Recovering Lithium Chloride From a Geothermal Brine 1984
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Product and Development Focus for Infinity Turbine
ORC Waste Heat Turbine and ORC System Build Plans: All turbine plans are $10,000 each. This allows you to build a system and then consider licensing for production after you have completed and tested a unit.Redox Flow Battery Technology: With the advent of the new USA tax credits for producing and selling batteries ($35/kW) we are focussing on a simple flow battery using shipping containers as the modular electrolyte storage units with tax credits up to $140,000 per system. Our main focus is on the salt battery. This battery can be used for both thermal and electrical storage applications. We call it the Cogeneration Battery or Cogen Battery. One project is converting salt (brine) based water conditioners to simultaneously produce power. In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).We welcome any business and equipment inquiries, as well as licensing our turbines for manufacturing.CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)