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Lepidolite Lithia Residue: Troost's Barium Fusion, Lithium Chloride Taken Out (Thorpe, 1912)
T. E. Thorpe · Public domain (published 1912)
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Charlie

4. Novemba 2026DE
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Lepidolite Lithia Residue: Troost's Barium Fusion, Lithium Chloride Taken Out (Thorpe, 1912)

Lithium salts from lepidolite by Troost's method: the powdered mineral is fused with barium carbonate, barium sulphate and potassium sulphate, the alkali sulphate layer turned into chlorides with barium chloride, and the lithium chloride dissolved out with alcohol and ether. The saline chlorides left behind are the residue in which Bunsen found rubidium. The fusion separates into two layers: barium silicate and sulphate below, white potassium and lithium sulphate above. Source: T. E. Thorpe, Dictionary of Applied Chemistry vol. III (1912), p. 338. Picture: the book's text.
Juu
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Maagizo

1

Fuse with barium salts

Mix 10 parts finely powdered lepidolite with 10 parts barium carbonate, 5 parts barium sulphate and 3 parts potassium sulphate, and ignite at the highest heat of a wind furnace. Two layers form: barium silicate and sulphate below, white potassium and lithium sulphate above.

Vifaa kwa hatua hii:

LepidolitiLepidoliti1 10 parts, finely powdered
Kabonati ya bariamu (witherite)Kabonati ya bariamu (witherite)1 10 parts
Baraiti (Heavy Spar)Baraiti (Heavy Spar)1 5 parts
Salfeti ya potasiamuSalfeti ya potasiamu1 3 parts

Zana zinazohitajika:

Kinu na mchiKinu na mchi
Chombo cha KuyeyushiaChombo cha Kuyeyushia
Tanuru la mkaaTanuru la mkaa
2

Turn the alkalis into chlorides

Lixiviate the upper layer with water and treat it with barium chloride, which turns the alkalis into chlorides and throws down the sulphuric acid as barium sulphate. Filter.

Vifaa kwa hatua hii:

Kloridi ya bariamuKloridi ya bariamu1 kipande
MajiMaji1 kipande

Zana zinazohitajika:

Karatasi ya KuchujaKaratasi ya Kuchuja
3

Take out the lithium chloride

Evaporate the solution to dryness and digest with equal parts of absolute alcohol and ether: the lithium chloride dissolves with only a trace of potassium and sodium chloride. What stays undissolved is the saline residue of alkali chlorides.

Zana zinazohitajika:

Sahani ya KuvukiziaSahani ya Kuvukizia
Pombe kamiliPombe kamili
Dietili ethaDietili etha

Vifaa

6

Zana Zinazohitajika

7

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Mabaki ya lithia ya lepidolaiti

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