SEPARATION OF LITHIUM FROM BRINES

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months of evaporation period, slaked lime (calcium hydroxide) is added to the brine, so that gypsum and magnesium hydroxide is precipitated (magnesium concentration in brine reduces to 2-3 ppm). Meanwhile the brine becomes basic and calcium starts to precipitate by absorption of carbon dioxide near slyvinite (NaCl, KCl salt). Slyvinite is sent to a different plant for the recovery of potassium. Afterwards, glaserite (K3Na[SO4]2), potassium chloride, and remaining gypsum and calcite precipitates in the last three ponds, then the final brine containing 5000 ppm lithium is sent to lithium carbonate plant [21, p. 101]. In this plant, concentrated brine is first treated with slaked lime so that the whole remaining magnesium and some part of remaining sulfate and borate ions are separated. Next, calcium in the brine coming from lime is withdrawn by adding small amount of soda ash (sodium carbonate) to the mixture which is followed by heating the brine to 93 oC and adding stoichiometric amount of soda ash to precipitate lithium carbonate as a final product. During this process some excess amount of water is added to the brine in order to prevent the precipitation of other salts. The final product is accepted to be in industrial grade due to its 400 ppm boron content. The whole lithium production scheme in Clayton Valley is shown in Figure 1.1. Figure 1.1 The process scheme of Clayton Valley 10

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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)