FIELD: chemistry.
SUBSTANCE: invention can be used in chemical industry. The method for complex recycling of wastes formed when processing titanium semi-finished products involves chemical analysis of spent acid wastes, adjusting molar ratio of titanium and fluorine in the solution to critical values, adding a calculated amount of an alkali metal to the solution, filtering, washing and drying the salt. Concentration of titanium in the spent acid wastes is increased to 90±5 g/l by dissolving solid fine-fraction titanium wastes. The molar ratio F/Ti in the spent acid wastes is adjusted to 6.3-6.8 by adding the required amount of hydrofluoric acid.
EFFECT: invention enables to create highly profitable technology of producing a valuable end product - potassium hexafluorotitanate, reduce the load on the environment and the hazard class of wastes.
4 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR WASTE ACIDIC SOLUTION REGENERATION AFTER ETCHING TITANIUM ALLOYS | 2005 |
|
RU2289638C1 |
| METHOD OF OBTAINING KTiF COMPOUND | 2011 |
|
RU2468996C1 |
| METHOD OF REGENERATING OF THE SPENT ACID DIPS FORMED WHEN PROCESSING OF TITANIUM PRODUCTS | 2015 |
|
RU2596564C1 |
| METHOD OF PREPARING IRON AND TITANIUM | 1998 |
|
RU2144504C1 |
| METHOD FOR OBTAINING ALUMINIUM-TITANIUM-BORON ALLOY COMBINATION | 2011 |
|
RU2466202C1 |
| METHOD OF COMPLEX PROCESSING OF TITANIUM-CONTAINING MINERAL RAW MATERIALS | 2016 |
|
RU2620440C1 |
| Al-Ti-B LIGATURE PRECURSOR | 2022 |
|
RU2810143C1 |
| METHOD OF PRODUCING HEXATITANIUM FLUORIDES OF ALKALI METALS | 0 |
|
SU1465714A1 |
| METHOD OF PRODUCING TITANIUM DIOXIDE AND SILICON CARBIDE FROM ABRASIVE PROCESSING WASTE | 2004 |
|
RU2281912C2 |
| LAYERED TITANATES, METHODS FOR PRODUCTION AND USE THEREOF | 2010 |
|
RU2564339C2 |
