US989868A - Ore-roasting furnace. - Google Patents

Ore-roasting furnace. Download PDF

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Publication number
US989868A
US989868A US59413010A US1910594130A US989868A US 989868 A US989868 A US 989868A US 59413010 A US59413010 A US 59413010A US 1910594130 A US1910594130 A US 1910594130A US 989868 A US989868 A US 989868A
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United States
Prior art keywords
furnace
rollers
ore
roasting furnace
rake
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Expired - Lifetime
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US59413010A
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Curt Pfaul
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
    • H10P72/04—Apparatus for manufacture or treatment
    • H10P72/0431—Apparatus for thermal treatment
    • H10P72/0434—Apparatus for thermal treatment mainly by convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on rails, e.g. under the action of scrapers or pushers

Definitions

  • Furnaces of which the following is a sp ec1-" fication.
  • the invention relates to an annular mechanical roasting or'heating furnace for 1 blende, pyrite, waste or coloring-matter with helical bed and helical rake parallel thereto.
  • Figure 1 represents a vertical section and Fig. 2 a horizontal section of the furnace.
  • the novelty of the invention as compared with known types of annular mechanical roasting or heating furnaces with helical beds consists in the fact that the framedike rakes b are carried by the rollers +cbedded in the walls of the annular furnace -abeing thus moved parallel to the helical bed.
  • the vertical shafts cl and e upon which the rollers c' are mounted are so arranged in the walls of the furnace that the rollers themselves are essentially situated. within the walls thereof, only a part of their.
  • the frame b"- is of the rollers 0-.
  • the furnace can without difiiculty be constructed on a very large scale, thus making all parts easier of access and enabling it in case of a break-down .inthe machinery to. be served by hand, which in many cases is imperative.
  • the present invention possesses the important advantage of-avoiding the excessive dust occasioned thereby as the mate rial. is nowhere freely precipitated.
  • the rake does not pass outof the furnace as in many other types of construction, the injurious effects of the entrance of air into,'or the exit of harmful gases from'the interior of the furnace is excluded.
  • the up and down movement of the rake is accomplished by purely mechanical means and as the whole of the machinery is extremely simple, the costs of working are much reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

s. PPAUL. ORE ROASTING FURNACE. APPLIOATIOH FILED NOV. 25, 1910.
I Patented Apr. 18. 1911:.
w/ TIIVEJSES CURT PFAUL, OF BLASEWITZ, DRESDEN, GERMANY.-
ORE-ROASTING FURNACE.
Application filed November 25, 1910. Serial No.594= ,130.
' To all whom it may concern:
Furnaces, of which the following is a sp ec1-" fication.
The invention relates to an annular mechanical roasting or'heating furnace for 1 blende, pyrite, waste or coloring-matter with helical bed and helical rake parallel thereto.
Reference is to be had to the accompanying drawings forming a part of this specification and in which the invention is shown. Figure 1 represents a vertical section and Fig. 2 a horizontal section of the furnace.
The novelty of the invention as compared with known types of annular mechanical roasting or heating furnaces with helical beds consists in the fact that the framedike rakes b are carried by the rollers +cbedded in the walls of the annular furnace -abeing thus moved parallel to the helical bed. The vertical shafts cl and e upon which the rollers c' are mounted are so arranged in the walls of the furnace that the rollers themselves are essentially situated. within the walls thereof, only a part of their.
' circumferencesextending into the interior in the frame simultaneously supported by at least three of the furnace and projecting into the ways The frame b"- is of the rollers 0-. Byturning the rollers c ina given direct-ion, by any suitable means, the rake and. the material to be roasted is. moved in a downward direction;
parallel to the surface of the helical base. The return movement of the rake is accomplished in any suitable manner as, for example, by reversing the movement of the rollers. The special advantage of this con- .struction as compared with others is'that no iron parts remain constantly in the heated interior of the furnace, for as the rollers .c'are in continual motion, each part of the circumference remains within the furnace only a very short time and at, once re turns into the cooler furnace-wall and there- Specification of Letters Patent.
Patented Apr, 18, 1911.
fore does not reach nearly so high a temperature as if it remained const ntly within the .furnace itself. The shafts (Z and e of the rollers -o are themselves protected against the h1gh temperature of the furnace by reason of their being embedded in the wall thereof, and being moreover constantly revolving they do not always present'the same surface in the direction of greatest heat. No part of the rake itself remains -constantly within the heat-zone of the furnace as it proceeds along the whole bed from one end to the other. On reaching the end of its movement and coming there intoa relatively lower temperature which does not affect the solidity of the. iron, it mayremain stationary awhile so as to keep it at a moderate temprotect it from wear and perature and so breakage. v
The furnace can without difiiculty be constructed on a very large scale, thus making all parts easier of access and enabling it in case of a break-down .inthe machinery to. be served by hand, which in many cases is imperative. I
Compared with those constructions in which the beds are arranged" in various stages one above the other and in which the material treated falls from one stage to the other, the present invention possesses the important advantage of-avoiding the excessive dust occasioned thereby as the mate rial. is nowhere freely precipitated. A
further advantage is that the rake does not pass outof the furnace as in many other types of construction, the injurious effects of the entrance of air into,'or the exit of harmful gases from'the interior of the furnace is excluded. As the up and down movement of the rake is accomplished by purely mechanical means and as the whole of the machinery is extremely simple, the costs of working are much reduced.
Having thus described my invention, I claim as new and desire to secure by Letters-Patent:-
In an annular furnace, in combination, inner and outer walls, a helical bed positioi ie'id Hem ken'saidwi zivllsi-trrake ildzrpte d. to na mefho this specification in Elie prg sence 0f itravl along said-bed; 'aplurality-off rollers two subscribing witnessa ,dfierzitiyeiy mounted withinrsaid Walls, each of said rollers extending-inwardly from said '5f3va11s1 to enga'ge-sziidrakg; and; means for Witnesses:-
0tating said rollers. I v 1 'PAUL ARMS, In testmmnv wh'er'eof'l have signed my CLKR -S IMON1.
US59413010A 1910-11-25 1910-11-25 Ore-roasting furnace. Expired - Lifetime US989868A (en)

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US59413010A US989868A (en) 1910-11-25 1910-11-25 Ore-roasting furnace.

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US59413010A US989868A (en) 1910-11-25 1910-11-25 Ore-roasting furnace.

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US989868A true US989868A (en) 1911-04-18

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