File:The quicksilver resources of California (1903) (14597191087).jpg

Identifier: quicksilverresou00forsrich (find matches)
Title: The quicksilver resources of California
Year: 1903 (1900s)
Authors: Forstner, William California State Mining Bureau
Subjects: Mercury mines and mining Mines and mineral resources Mercury ores
Publisher: Sacramento, Calif. : W.W. Shannon, supt. of State printing
Contributing Library: University of California Libraries
Digitizing Sponsor: Kahle/Austin Foundation and Omidyar Network

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chamber. Following isa table giving the dimensions of some furnaces: METALLURGY. 223 s-inoH -2 ° . >!? is? ■jaqtunx Hex- a ^ . c S 1§§ 1 ^K< a 2 u c Sx nt til SlIIBUIdH aSJBij^ ajiiij. ■XjpBflB^ •jndino XjiBa j:^ r:c tr, r^ fr. ^ S. f^ rO Tf ■* ro ■s::^ is? .V ir, -r ■* t» o ■t;:^; :s ;se t^ M o 0> CO >0 <, - - •- - ^ ^ to W \0 to M ^2 2 5 a s, .:^ j^ j^ ^ ^— — _ ^ u x. /. y. y. £ ~ p. r •: - 3. a ai;- /^ r. -x «; O 224 QUICKSILVER RliSOURCES OF CALIFORNIA. At the New Almauen, some furnaces, viz., Xos. 3 and S, areentirely surrounded by iron plates, and are called ironcladfurnaces. This method of inclosing a furnace gives very goodsatisfaction, but is very expensive. Generally furnaces areinclosed in a wooden framework strengthened by iron tie rods.In order to prevent this wooden framework from catching fire,especially near the cracks in the furnace, which are almostinevitable, it is advisable to surround them with asbestos, 2
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t PHOTO No. 31. K.-VRL FrR.\.\Cl.. r-AX LUIS OBISPO COUNTY inches thick. (See Fig. 84.) The later furnaces are commonlyof a daily capacity of 10, 20, 30, and 50 tons. The principalmaterials entering in these furnaces are: lo-Toii. i)o-Toii. so-Tou. Common brick No. 150,000 300,000 400,000 Firebrick 12,000 20.000 30,000 Tiles iSS 360 42S Cement bbls. 25 40 50 Fire clay. Timber for frame. Iron for frame, grates, hopper^ etc. METALLURGY. 225 The price of the firebrick is $32.50 per 1000 at San Francisco.The price of tiles 3 inches by 15 inches bv 36 inches is S3.50apiece. When the ore is charged moist in the furnace a great amountof water vapor will be formed, which not only increases thealready excessive amount of fumes out of which the mercurymust be condensed, but also the formation of a great amountof sulphuric acid and of sulphates, both of which are veryinjurious to the condensers. The opinion of operators as to

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