A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...

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118 THE METALLURGY OF ANTIMONY. sulphide on the hearth of a reverberatory furnace. After the hot ore has been charged and thoroughly rabbled, iron is added, the temperature of the furnace raised, and, when the decomposition is complete, the antimony tapped; the tap-hole is closed as soon as the iron sulphide appears. Slag is drawn through the working doors; and the increase of iron sulphide obtained during the operation is removed until the bath is reduced to its original depth. This method is said to have given good results, and has been in successful operation for more than a year. Cookson patented* in 1902 a process very similar to that of Sanderson. In fact, Cookson's and Sanderson's patents are copies of a similar patent by Herrenschmidt (No. 296,200, Jan. 16, 1900, France), shown in fig. 54. (b) Water-jacket or Blast Furnaces.—Hering has experimented with shaft furnaces for the treatment of liquation residues by the precipitation method. 'Although his experiments have not been continued, yet good results might be obtained if rich ores were treated. According to Herrenschmidt, rich ore can be treated directly in a water-jacketed furnace. Temperature = 1000° to 1100° C. Airblast =10 c. of mercury. About 12 to 14 per cent, of antimony can be recovered from the condensing chambers. Coke used = about 300 kgs. per ton. (c) Converters.—According to Germot, t sulphide ore can be smelted in a converter into which air is blown. The air burns part of the sulphur of the ore, with the production of sulphurous acid and the metal itself. The operation is made continuous by the addition of more ore. The sulphurous acid produced escapes through a pipe at the upper part of the converter, together with the antimony sulphide fumes. If a current of air is made to act on these fumes, oxysulphide or antimony oxide will be produced, according to the amount of air admitted. The products of the extraction of crude antimony J are unrefined antimony and slags. The former contains many foreign elements, as shown in the analyses given in the table on p. 120. This impure antimony has to be refined. The slags obtained from * French patent No. 324,864, Sept. 30, 1902. t A. Germot, Revue des Produits Chimiques, Dec. 15, 1907. Similar to Herrenschmidt's French patent No. 333,340, June 24, 1903. t The term "crude antimony," meaning the unrefined metal, must be disinguished from the teim "antimony crude,*' which means the liquated antimony sulphide.
THE METALLURGY OF ANTIMONY. 119 the extraction by the roasting and reduction method consist principally of silicates, while those obtained by the precipitation method are silicates and sulphides. They arc thrown away if they are not sufficiently rich to be used in the first smelting of the ores.
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A N T I M O N Y : ITS HISTORY, CHEM
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PREFACE. A METALLURGICAL work in En
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TABLE OF CONTENTS. CHAPTER I. THE H
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THE METALLURGY OF ANTIMONY. CHAPTER
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THE HISTORY OF ANTIMONY. 3 Basil Va
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THE HISTORY OF ANTIMONY. 3 precipit
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THE CHEMISTRY OF ANTIMONY. 7 antimo
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THE CHEMISTRY OF ANTIMONY. the red
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THE CHEMISTRY OF ANTIMONY. 11 The m
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THE CHEMISTRY OF ANTIMONY. 13 SECTI
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THE CHEMISTKY OF ANTIMONY. compound
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Chemical Formulae. K3SbCl6 Na3SbCl6
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THE CHEMISTRY OF ANTIMONY. 19 The o
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THE CHEMISTKY OF ANTIMONY. 21 a cop
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THE CHEMISTRY OF ANTIMONY. 23 (2b)
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THE CHEMISTRY OF ANTIMONY. 25 Boili
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Chemical Composition. (STH4)2Sb4S7
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THE CHEMISTRY OF ANTIMONY* 29 by di
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THE CHEMISTRY OF AOTIMONY. 227° =
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THE CHEMISTRY OF ANTIMONY. 33 Some
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CHAPTER TIT. THE MINERALOGY OF ANTI
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THE MINERALOGY OF ANTIMONY. 37 Occu
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THE MINERALOGY OF ANTIMONY. 39 Occu
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THE MINERALOGY OF ANTIMONY. 41 Miar
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THE MINEIIALOGY OF ANTIMONY. 43 Occ
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THE MINERALOGY OF ANTIMONY. 45 3. D
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THE GEOLOGICAL OCCURRENCE OF ANTIMO
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THE GEOLOGICAL OCCURRENCE OK ANTIMO
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TI1K ISKOIJOGIOAL OOCURUKNOK OV ANT
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THE GEOLOGICAL OCCUERENCE OF ANTIMO
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THE GEOLOGICAL OCCUBRENCE OF ANTIMO
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TIIK GEOLOGICAL OCCUKUENCK OF ANTIM
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THE GEOLOGICAL OCCUKRENCE OF ANTIMO
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GENERAL SCHEME OF THE METALLURGY OF
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Page 91 and 92: THE METALLURGY OF ANTIMONY. 85 (2)
Page 93 and 94: THE METALURGY OF ANTIMONY. 87 roast
Page 95 and 96: THE METALLURGY OF ANTIMONY. 89 Chat
Page 97 and 98: FIG. 28. ¥m. 29. a, Roasting furna
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Page 103 and 104: THE METALLURGY OK ANTIMONY. The inf
Page 105 and 106: Cross Section C.D.E.F Cross Section
Page 107: G. Y, Wang's Antiinony. [To face pa
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Page 134 and 135: 126 THE MBTALLUKGY OF ANTTMONY.
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168 THE METALLURGY OF ANTIMONY. (J3
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170 THE METALLURGY OF ANTIMONY. che
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172 THE METALLURGY OF ANTIMONY. Bee
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174 THE METALLURGY OF 12. Por the F
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176 THE METALLURGY OF ANTIMONY. 41.
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CHAPTER VIT. THE ANALYSIS OP ANTIMO
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130 THE METALLURGY OF ANTIMONY. int
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182 THE METALLURGY OF ANTIMONY. vol
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184 THE METALLURGY OF ANTIMOKY. bon
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186 THE METALLURGY OF ANTIMONY. The
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188 THE METALLURGY OF ANTIMONY. rat
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190 THE METALLURGY OF ANTIMONY. 1 l
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CHAPTER VIII. THE PBODUCTION AND VA
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198 THE METALLURGY OF ANTIMONY. sil
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200 THE METALLURGY OF ANTIMONY. Yea
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202 THE METALLUEGY OF ANTIMONY. Now
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204 THE METALLURGY OF ANTIMONY. ITA
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206 THE METALLURGY OF ANTIMONY. (13
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INDEX. AAEON, C. H., 191. Abegg, 34
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0 INDEX. bierre, 66, 67. 86, 154 ck
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212 INDEX. Gross-Gbllnitz, 70. Grii
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214 INDEX. Mines, antimony, 205, 20
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216 INDEX. Spain, antimony ores of,
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