speiss

S0623300 (spīs)n. An arsenic compound or a mixture of arsenic compounds resulting from the smelting of iron, cobalt, nickel, and copper ores.

[German Speise, food, speiss, from Middle High German spīse, food, from Old High German spīsa, probably from Medieval Latin spēnsa, storehouse, or spēsa, provisions, both from Latin expēnsa (pecūnia), (money) paid out; see expense.]

speiss

(spaɪs) n (Chemistry) the arsenides and antimonides that form when ores containing arsenic or antimony are smelted[C18: from German Speise food]

speiss

(spaɪs)

n. a product obtained in smelting certain ores, consisting of metallic arsenides. [1790–1800; < German Speise literally, food]

Speiss

enUK

speiss

[spīs] (metallurgy) A mixture of impure metal arsenides and antimonides resulting from the smelting of certain ores such as cobalt and lead.

Speiss

an intermediate product or by-product in nonferrous metallurgy, an alloy of arsenides and antimonides of iron, cobalt, nickel, copper, or other metals formed in the melting of raw materials with a high arsenic content. Cobalt speiss is formed in the melting of arseniccobalt raw materials. To extract the cobalt, this speiss is roasted to remove arsenic and sulfur, and the oxides produced are subjected to further metallurgical treatment or are sulfatized by sintering with concentrated sulfuric acid and converted by hydrometallurgical treatment.

In the production of lead, speiss is formed in the shaft melting of charges with a high arsenic content and in the melting of copper drosses. As a consequence of its low solubility and relatively high density (8–8.5 g/cm₃), speiss is found in a separate layer between the molton lead and the matte.

Speiss is a good collector of lead, silver, and gold; because significant amounts of these metals are lost when using the alloy, the formation of speiss in lead production is undesirable. Speiss is usually treated together with matte in converters with the partial distillation of arsenic and antimony and production of low-quality black copper.

REFERENCES

Loskutov, F. M. Metallurgiia svintsa. Moscow, 1965.
Osnovy metallurgii, part 4. Moscow, 1967.

M. P. SMIRNOV

单词	speiss
释义	speiss enUK speiss S0623300 (spīs)n. An arsenic compound or a mixture of arsenic compounds resulting from the smelting of iron, cobalt, nickel, and copper ores. [German Speise, food, speiss, from Middle High German spīse, food, from Old High German spīsa, probably from Medieval Latin spēnsa, storehouse, or spēsa, provisions, both from Latin expēnsa (pecūnia), (money) paid out; see expense.] speiss (spaɪs) n (Chemistry) the arsenides and antimonides that form when ores containing arsenic or antimony are smelted[C18: from German Speise food] speiss (spaɪs) n. a product obtained in smelting certain ores, consisting of metallic arsenides. [1790–1800; < German Speise literally, food] Speiss enUK speiss [spīs] (metallurgy) A mixture of impure metal arsenides and antimonides resulting from the smelting of certain ores such as cobalt and lead. Speiss an intermediate product or by-product in nonferrous metallurgy, an alloy of arsenides and antimonides of iron, cobalt, nickel, copper, or other metals formed in the melting of raw materials with a high arsenic content. Cobalt speiss is formed in the melting of arseniccobalt raw materials. To extract the cobalt, this speiss is roasted to remove arsenic and sulfur, and the oxides produced are subjected to further metallurgical treatment or are sulfatized by sintering with concentrated sulfuric acid and converted by hydrometallurgical treatment. In the production of lead, speiss is formed in the shaft melting of charges with a high arsenic content and in the melting of copper drosses. As a consequence of its low solubility and relatively high density (8–8.5 g/cm₃), speiss is found in a separate layer between the molton lead and the matte. Speiss is a good collector of lead, silver, and gold; because significant amounts of these metals are lost when using the alloy, the formation of speiss in lead production is undesirable. Speiss is usually treated together with matte in converters with the partial distillation of arsenic and antimony and production of low-quality black copper. REFERENCES Loskutov, F. M. Metallurgiia svintsa. Moscow, 1965. Osnovy metallurgii, part 4. Moscow, 1967. M. P. SMIRNOV
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