o 



An experiment for the substitution of a new method of smelting the mattes 



X 



? 



1 



Mixtures (Lits tie fusion.) 







j 

 1 



Production, j 



1 Contents in 



metal 



by assays. 

 Silver. 





Cupellation oi' lead. 







en 

 & 



qts. 



700 

 700 



1 -^ 



■a 



J! t- 



■C T *"• 

 ^=j S o 



«< CO | | 



qts. qts. £ 



22 528 17 

 22 53217 



• 



o 



a 

 XI 

 O 



Maars. 



123 



127 



■ 



o 



• 



qts. 



242 

 258 



S .2 



03 O 

 <i CO 



qts. qts. 



108 832 

 137 834 



Lead. 





o> 



> 



55 



m 



OB 



• 



x\ 



2 



qts. 



9 

 10 



Fagots. 







03 



• 



CO 



1 



CD 



cn 



j 



i 



o 



CO 





• 



J 



c c- o 



co 

 loths. 



d ' is 



.13 ,£> 



qts. qts. 



153 23 



165 27 



en tn 



^ "§ 



O O 



O WD 



J « 



CO fa 



17 20 

 17 45 



qts. qts. j qts. 



Balgen. 



lbs. per qtl. 



loths. 



loths. 



loths. marks. 



Iron, 

 Lime, 



I 



- - 22 

 55 - - 



88 

 88 



444 

 444 



38 

 30 



7 

 6 



" 



if 



1 



78 

 80 



3 

 10 



The operation in which the iron was employed, gave 80 centners of cupel bottoms : the lime, 78. Thus the results 

 are decidedly in favor of the lime, which, by being employed instead of the iron, would give a saving of 2510 quintals of 



o% iron per annum 



dfor the fusion of 



We have seen that the compound of sulphur and lead 



existing in the mattes after roasting has been heretofore decomposed by granulated iron. The above experiment having 

 been crowned with success we add the composition of the smelting beds, and the result from the first to the ninth of Oct. 1929. 



32 quintals of roasted mattes, 



4 

 2 

 2 



27^ 



£< 



U 



a 



M 



" Cupel bottoms, 



" Abstrichs, 



" Limestone, 



11 Scoria from the smelting of schlich. 



S 



*1 



t* 



K> 



