• 20,000 liters of lithium chloride product shipped
  • Conversion to lithium carbonate will be done using conventional batch process and also proprietary SiFT process
  • Design work begins on first commercial Direct Lithium Extraction plant

EL DORADO, Ark. (GLOBE NEWSWIRE) — Standard Lithium Ltd. (“Standard Lithium” or the “Company”) (TSXV: SLL) (OTCQX: STLHF) (FRA: S5L), an innovative technology and lithium project development company has shipped its first large volume of lithium chloride product from the Company’s Direct Lithium Extraction (DLE) Demonstration Plant for final conversion to lithium carbonate.

Direct Lithium Extraction
The Company’s first-of-its-kind in the world DLE Demonstration Plant is installed at LANXESS’ South Plant facility near El Dorado, Arkansas. The Demonstration Plant utilizes the Company’s proprietary “LiSTR” technology and is designed to continuously process an input tail brine flow of 50 gallons per minute (gpm; or 11.4 m3/hr) from the Lanxess South Plant, which is equivalent to an annual production of between 100-150 tonnes per annum of lithium carbonate.

Dual Track Program for Lithium Carbonate Conversion
As the Company continues to de-risk the south Arkansas project, it is undertaking a dual-track testing program for the conversion of lithium chloride to lithium carbonate. The Company is shipping an initial total volume of 20,000 liters of lithium chloride product for conversion to battery quality lithium carbonate using: (1) a third-party OEM/vendor in Plainfield, Illinois for lithium carbonate conversion using a conventional process; and (2) Saltworks Technologies Inc. in Richmond, B.C. to continue work currently underway using the company’s proprietary SiFT crystallization process.

SiFT Plant Update
The Company’s industrial-scale lithium carbonate SiFT crystallization pilot plant, located in Richmond, B.C., has been operating successfully since mid-July using a lithium chloride solution that was produced last year by the Company’s mini-pilot DLE plant (note, this lithium chloride solution was produced from Arkansas brine). The SiFT plant has been making high-purity lithium carbonate crystals from this lithium chloride and is now ready to receive the large volume of product coming from Standard Lithium’s continuously-operating plant in Arkansas for final conversion to battery-quality lithium carbonate. Photos of the product prior to shipping are shown in Figure 1 below, and live viewing of the lithium carbonate crystallization process from the SiFT Pilot Plant is shown in Figure 2.

Commercial Plant Design
Standard Lithium and its technical team have begun the process of scoping and designing the first commercial Direct Lithium Extraction plant for the Arkansas project. The design process is being aided by data generated from the Company’s continuously-operating LiSTR demonstration plant, and original equipment manufacturers (OEMs) have been engaged for early involvement in the design process.

Dr. Andy Robinson, president and COO of Standard Lithium commented, “Standard Lithium keeps on delivering and de-risking our pre-commercial plants. We’ve been successfully operating our first-of-its-kind industrial scale DLE plant in Arkansas, and we’ve been continuously making lithium chloride product for months. We’re now at the point where we’ve got our SiFT pilot plant running, and we can use it to convert the lithium chloride product from Arkansas. This is a very exciting time for us because we’re approaching the point where we can demonstrate the continuous extraction of lithium from Smackover brine and conversion into battery-quality material.”

About Standard Lithium Ltd.
Standard Lithium (TSXV: SLL) is an innovative technology and lithium development company. The company’s flagship project is located in southern Arkansas, where it is engaged in the testing and proving of the commercial viability of lithium extraction from over 150,000 acres of permitted brine operations. The Company has commissioned its first-of-a-kind industrial scale Direct Lithium Extraction Demonstration Plant at LANXESS’ South Plant facility in southern Arkansas. The Demonstration Plant utilizes the Company’s proprietary LiSTR technology to selectively extract lithium from LANXESS’ tailbrine. The Demonstration Plant is being used for proof-of-concept and commercial feasibility studies. The scalable, environmentally-friendly process eliminates the use of evaporation ponds, reduces processing time from months to hours and greatly increases the effective recovery of lithium. The company is also pursuing the resource development of over 30,000 acres of separate brine leases located in southwestern Arkansas and approximately 45,000 acres of mineral leases located in the Mojave Desert in San Bernardino County, California.

Standard Lithium is listed on the TSX Venture Exchange under the trading symbol “SLL”; quoted on the OTC – Nasdaq Intl Designation under the symbol “STLHF”; and on the Frankfurt Stock Exchange under the symbol “S5L”. Please visit the Company’s website at www.standardlithium.com

On behalf of the Board of Standard Lithium Ltd.

Robert Mintak, CEO & Director

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. This news release may contain certain “Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws. When used in this news release, the words “anticipate”, “believe”, “estimate”, “expect”, “target, “plan”, “forecast”, “may”, “schedule” and other similar words or expressions identify forward-looking statements or information. These forward-looking statements or information may relate to future prices of commodities, accuracy of mineral or resource exploration activity, reserves or resources, regulatory or government requirements or approvals, the reliability of third party information, continued access to mineral properties or infrastructure, fluctuations in the market for lithium and its derivatives, changes in exploration costs and government regulation in Canada and the United States, and other factors or information. Such statements represent the Company’s current views with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by the Company, are inherently subject to significant business, economic, competitive, political and social risks, contingencies and uncertainties. Many factors, both known and unknown, could cause results, performance or achievements to be materially different from the results, performance or achievements that are or may be expressed or implied by such forward-looking statements. The Company does not intend, and does not assume any obligation, to update these forward-looking statements or information to reflect changes in assumptions or changes in circumstances or any other events affections such statements and information other than as required by applicable laws, rules and regulations.