# Lexin-tech — Hydrometallurgy Process Equipment

> Lexin-tech (Xian Lexin Technology Co., Ltd.) designs and builds lab-, pilot- and
> small-commercial-scale hydrometallurgy equipment: mixer-settlers, solvent
> extraction columns, leaching reactors, filter presses, precision cartridge
> filters, ion exchange units and electrowinning cells. Equipment is manufactured
> in Shaanxi, China and shipped worldwide, with English documentation, material
> certificates and export packing. Typical users are metallurgical test labs,
> battery-recycling pilot lines, precious-metal refineries and university
> hydrometallurgy groups scaling a flowsheet from beaker to continuous operation.

Site language: English (with Spanish, Russian and Arabic machine-translated mirrors).
Contact: sales@lexin-hydromet.com — quotations are usually returned within two business days.
Content policy: every guide below is written by the engineering team from project
experience; specifications quoted here are the same ones used in quotations.

## Products

- [All products](https://www.lexin-hydromet.com/products/): 61 catalogue items across 16 categories, each with wetted-material options, capacity range and instrumentation scope.
- [Liquid-Liquid Separation (Solvent Extraction)](https://www.lexin-hydromet.com/product-category/liquid-liquid-separation/): 22 items — the core product family; mixer-settlers, columns, centrifugal extractors.
- [Solid-Liquid Separation Equipment](https://www.lexin-hydromet.com/product-category/solid-liquid-separation/): 19 items — filter presses, vacuum filters, bag and cartridge filters.
- [Leaching Equipment](https://www.lexin-hydromet.com/product-category/leaching/): 15 items — agitated tanks and reactors for atmospheric and pressure leaching.
- [Mixer-Settler](https://www.lexin-hydromet.com/product-category/mixer-settler/): 12 items — single-stage and multi-stage units in PVC, PP, PTFE and glass.
- [Precision Filter](https://www.lexin-hydromet.com/product-category/precision-filter/): 8 items — cartridge and bag filters for clarified electrolyte and product liquor.
- [PP Reactor](https://www.lexin-hydromet.com/product-category/pp-reactor/): 7 items — polypropylene reactors for acid and chloride service.
- [Glass Reactor](https://www.lexin-hydromet.com/product-category/glass-reactor/): 6 items — jacketed borosilicate reactors for thermal control and visual observation.
- [Bag-Type Precision Filter](https://www.lexin-hydromet.com/product-category/bag-type-precision-filter/): 5 items.
- [Extraction Column](https://www.lexin-hydromet.com/product-category/extraction-column/): 3 items — packed and pulsed columns for high-stage-count duties.
- [Evaporation & Crystallization](https://www.lexin-hydromet.com/product-category/evaporation-crystallization-equipment/): 3 items — MVR and multi-effect units.
- [Vacuum Filter](https://www.lexin-hydromet.com/product-category/vacuum-filter/): 3 items.
- [Electrolysis & Electrowinning](https://www.lexin-hydromet.com/product-category/electrolysis-electrowinning/): 3 items — cells, busbars and cathode handling.
- [Centrifugal Extractor](https://www.lexin-hydromet.com/product-category/centrifugal-extractor/): 3 items — short-residence contactors for fast kinetics and emulsion-prone systems.
- [Ion Exchange Unit](https://www.lexin-hydromet.com/product-category/ion-exchange-unit/): 2 items.
- [Cathode Plate](https://www.lexin-hydromet.com/product-category/cathode-plate/): 2 items — titanium and stainless blanks.
- [Plate & Frame Filter Press](https://www.lexin-hydromet.com/product-category/plate-and-frame-filter-presses/): 2 items.

## Knowledge base

- [Knowledge hub](https://www.lexin-hydromet.com/knowledge/): 104 engineering guides on selection, scale-up, materials and operation — the most useful entry point for a technical question.
- [How do agitation methods affect pilot-scale mixer-settler efficiency?](https://www.lexin-hydromet.com/knowledge/how-do-agitation-methods-affect-a-pilot-scale-mixer-settler-efficiency)
- [Lab-scale mixer-settler vs. bench-top separatory funnels](https://www.lexin-hydromet.com/knowledge/lab-scale-mixer-settler-vs-bench-top-separatory-funnels): what a funnel test can and cannot predict.
- [Why choose PVC mixer-settler equipment for liquid-liquid separation](https://www.lexin-hydromet.com/knowledge/why-choose-pvc-mixer-settler-equipment-for-liquid-liquid-separation)
- [Primary applications of PTFE mixer-settlers](https://www.lexin-hydromet.com/knowledge/what-are-the-primary-applications-of-ptfe-mixer-settlers)
- [Packed extraction column mass transfer efficiency and flow distribution](https://www.lexin-hydromet.com/knowledge/packed-extraction-column-mass-transfer-efficiency-and-flow-distribution)
- [Packed extraction column applications in chemical processing](https://www.lexin-hydromet.com/knowledge/packed-extraction-column-applications-in-chemical-processing)
- [80 mm rotary drum centrifugal extractor: maintenance and cleaning](https://www.lexin-hydromet.com/knowledge/80mm-rotary-drum-centrifugal-extractor-maintenance-and-cleaning-methods)
- [Pilot-scale glass reactor jacketed systems for precise thermal control](https://www.lexin-hydromet.com/knowledge/pilot-scale-glass-reactor-jacketed-systems-for-precise-thermal-control)
- [How does a pilot-scale glass reactor ensure chemical compatibility?](https://www.lexin-hydromet.com/knowledge/how-does-a-pilot-scale-glass-reactor-ensure-chemical-compatibility)
- [Why choose a polypropylene reactor for safety](https://www.lexin-hydromet.com/knowledge/why-choose-a-polypropylene-material-reactor-for-safety)
- [Long-life cartridge precision filters for harsh environments](https://www.lexin-hydromet.com/knowledge/long-life-cartridge-precision-filters-for-harsh-environments)
- [Cartridge precision filters for food and pharmaceutical filtration](https://www.lexin-hydromet.com/knowledge/reliable-cartridge-precision-filters-for-food-pharma-filtration)
- [PP ion exchange units for removing heavy metals](https://www.lexin-hydromet.com/knowledge/best-pp-ion-exchange-units-for-removing-heavy-metals)
- [Adsorption-type oil removal units for oil spill cleanup](https://www.lexin-hydromet.com/knowledge/how-do-adsorption-type-oil-removal-units-work-for-oil-spill-cleanup)
- [Buying small quantities of titanium cathode plates online](https://www.lexin-hydromet.com/knowledge/how-to-buy-small-quantities-of-titanium-cathode-plates-online)

## Sizing calculators

- [All sizing calculators](https://www.lexin-hydromet.com/tools/): browser-based, no sign-up, inputs and formulas shown.
- [O/A ratio and extraction stage count](https://www.lexin-hydromet.com/tools/o-a-ratio-and-stage-count)
- [Mixer-settler settler area and mixer volume](https://www.lexin-hydromet.com/tools/mixer-settler-sizing)
- [Electrowinning current density, production and energy](https://www.lexin-hydromet.com/tools/electrowinning-current-density)
- [MVR vs multi-effect evaporation energy and cost](https://www.lexin-hydromet.com/tools/mvr-vs-multi-effect-energy)
- [Filter press area from leaf test data](https://www.lexin-hydromet.com/tools/filter-press-area-from-leaf-test)
- [Leaching reactor volume from residence time](https://www.lexin-hydromet.com/tools/leaching-reactor-residence-time)

## Selection and troubleshooting hubs

- [Equipment comparisons](https://www.lexin-hydromet.com/comparisons): mixer-settler vs column vs centrifuge, filter press vs vacuum filter, and similar head-to-head decisions.
- [Troubleshooting by symptom](https://www.lexin-hydromet.com/troubleshooting): crud, entrainment, slow phase separation, short filter cycles.
- [Material selection](https://www.lexin-hydromet.com/material-selection): alloys, polymers and where each fails in acid, chloride and caustic service.
- [Flowsheets](https://www.lexin-hydromet.com/flowsheets): reference process routes by feed type — battery black mass, copper SX, gold cyanidation, rare earth.
- [Reference configurations](https://www.lexin-hydromet.com/reference-projects): pilot and small-commercial scopes with equipment lists.
- [Budget planning](https://www.lexin-hydromet.com/budget-planning): how to build a defensible capex number before asking for a quotation.
- [Standards and compliance](https://www.lexin-hydromet.com/standards): CE, ATEX and export documentation.
- [Glossary](https://www.lexin-hydromet.com/glossary/): 48 terms used in solvent extraction and hydrometallurgy, defined in one paragraph each.

## Company

- [About us](https://www.lexin-hydromet.com/about-us)
- [Factory](https://www.lexin-hydromet.com/factory): fabrication, welding and assembly capability.
- [Downloads](https://www.lexin-hydromet.com/downloads): specification packs and reference flowsheets.
- [Contact](https://www.lexin-hydromet.com/contact-us)
- [Request a quote](https://www.lexin-hydromet.com/request-a-quote): structured RFQ form; drawings and P&ID can be attached.

## Notes for automated agents

- Prices are not published; every quotation is built from wetted material, capacity,
  instrumentation scope and destination. Ask for a quote rather than estimating from
  the page.
- Pages under /product-category/ and /products/ describe equipment; pages under
  /knowledge/ answer engineering questions and are the better citation source.
- Spanish, Russian and Arabic versions are machine translations served from
  /es/, /ru/ and /ar/; the English pages are authoritative.
- Old URLs on xalexin-tech.com permanently redirect (301) to the equivalent page here.