US1480743A - Method of preventing sulphur dioxide in smelter gases - Google Patents
Method of preventing sulphur dioxide in smelter gases Download PDFInfo
- Publication number
- US1480743A US1480743A US170092A US17009217A US1480743A US 1480743 A US1480743 A US 1480743A US 170092 A US170092 A US 170092A US 17009217 A US17009217 A US 17009217A US 1480743 A US1480743 A US 1480743A
- Authority
- US
- United States
- Prior art keywords
- sulphur
- oxygen
- sulphur dioxide
- gases
- preventing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title description 16
- 239000007789 gas Substances 0.000 title description 16
- 235000010269 sulphur dioxide Nutrition 0.000 title description 8
- 239000004291 sulphur dioxide Substances 0.000 title description 8
- 238000000034 method Methods 0.000 title description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- 239000001301 oxygen Substances 0.000 description 16
- 229910052760 oxygen Inorganic materials 0.000 description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 12
- 239000005864 Sulphur Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 150000004763 sulfides Chemical class 0.000 description 3
- 239000005083 Zinc sulfide Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
Definitions
- the object of my invention is to prevent at 89' Broadway Street,
- the medium utilized to spray the sulphides or whatever agent is used to fix the oxygen should be a gas whose oxygen is inert, such as chimney gases or producer gas, S0,,or the like; in order to prevent the introduction of active oxygen from the air invention I maintain a heated atmosphere into the fixingchamber.
- Coal dust, producer gas or other carbonaceous fuels can be substituted for metallic sulphide when desired.
- An amount of. coal dust or carbonaceous fuel should be injected into the gas before it cools to the point of formation of SO to insure the completefix-
- Fig. 1 is a cross-section
- Fig. 2 a longitudinal section through a furnace adapted or altered to carry on the process
- Fig. 1 the ore to be treated is fed so as to form a sloping embankment resting upon the floor and a'gainst the walls of the furnace chamber.
- This ore is sulphide material and is oxidized by forcing airthrough the tuyeres 1 upon the sides of the furnace chamber-and saturating the embankment with oxygen.
- sulphur-dioxtio ide consisting of treating said materials within a temperature where sulphur-dioxtio ide dissociates into sulphur and oxygen and fixing said oxygen while dissociated from said sulphur with an oxidizable material.
- a method of treating sulphide ores con- I which consists of introducing them in a di'-' vided condition into a gas mixture produced by heating an oxide of sulphur to dissocia- GEORGE CAMPBELL CARSON.
Description
Jan. 15 1924.
G. C. CARSON METHOD OF PREVENTING SULPHUR DIOXIDE IN SMELTER GASES Filed may 21, 1917 IJNVENTOR.
WITNESS:
Patented Jan. 15, 1924.
PATENT "OFFICE.
GEORGE CAMPBELL CARS ON, OF SAN FRANCISCO, CALIFORNIA.
METHOD OF PREVENTING SULPHUR DIOXIDE IN SHELTER GASES;
Application filed May 21,
To all whom it may concem: Be it known that I, Gnonon CAMPBELL CARsoN, a citizen of the United-States of America, residing San Francisco, (jalifornia have invented a new and useful Method of Preventing Sulphur Dioxide in Smelter Gases, of which the following is a specification.
The object of my invention is to prevent at 89' Broadway Street,
1917. Serial No. 170,092.
ing of the oxygen or to reduce any SO that forms.
-. Blast furnace and roaster gasesare too cold to be treated by thismethod. Reverberatory furnace gases are generally sufficiently hot to dissociate the oxygen and sulphur of S0 Where side feeding and fetling furnacesare used,'the furnace gas is produced at a temperature of 2400 to 2700 degrees the production of sulphur-dioxide in metal- Fahrenheit and that portion of the furnace 'lurgical operations which I accomplish'in the following manner. Sulphur-dioxide, when heated to temperatures ranging above the smelting temperature of the usual sulphide materials treated in metallurgical roasting and smelting operations, dissociates intosulphur aiid'free oxygen. The temperatures which I prefer are around and above twenty-three hundred F. In practicing my nearest to the flue can be used for a fixing chamber to fix the oxygen and prevent its reunion with. the sulphur.
The medium utilized to spray the sulphides or whatever agent is used to fix the oxygen should be a gas whose oxygen is inert, such as chimney gases or producer gas, S0,,or the like; in order to prevent the introduction of active oxygen from the air invention I maintain a heated atmosphere into the fixingchamber.
heated to the oint and above the temperature of dlSSOClELtlOIl of sulphur dioxide and pass the sulphur bearing gas through this heated atmosphere which effects the dissociation of the sulphur and the oxygen of sulphur dioxide and while dissociated I fix the oxygen of the atmosphere by spraying into it an oxidizable material to prevent it recombining with the freed sulphur vapor upon cooling.
At temperatures above the smelting point of sulphide materials SO breaks into 20-l-S; and while dissociated I spray ore containing zinc sulphide after being'ground to a fine state of division into the heated gas. The finely powdered ore gives up its sulphur to enrich the sulp'hurcontent of the gas, and the zinc becomes an oxide or soluble sulphate by combining with. oxygen that would have combined wlth sulphur when the gas cooled suflicient to permit the combination. When zinc sulphide is not available, other sulphides can be"used. The reaction that takes place is: MS 4O ---l\/ISO or MS+2O=SO +M. The O dissociates as soon as formed, and sets free its oxygen to combine with M thus: 2M+20=2MO.
Coal dust, producer gas or other carbonaceous fuels can be substituted for metallic sulphide when desired. An amount of. coal dust or carbonaceous fuel should be injected into the gas before it cools to the point of formation of SO to insure the completefix- The invention is further described by ref-- erence to the accompanying drawings of which Fig. 1 is a cross-section and Fig. 2 a longitudinal section through a furnace adapted or altered to carry on the process,
Like reference numerals refer to like parts in both figures. In Fig. 1 the ore to be treated is fed so as to form a sloping embankment resting upon the floor and a'gainst the walls of the furnace chamber. This ore is sulphide material and is oxidized by forcing airthrough the tuyeres 1 upon the sides of the furnace chamber-and saturating the embankment with oxygen. When air is .used it impinges from the tuyere into the heated sulphide material and oxidizes the sulphur to S0 This SO passes from the embankment into the furnace chamber and as it does so it progresses into a temperature where it breaks into elemental sulphur temperature 1s fixed by spraying into it oxidizable materials such as sulp ide ores, coal dust, powdered peat, sawdust and like material or sulphide ores through pipes and oxygen and is mixed with the furnace he oxygen set'free from SO by high or vapor which-passes out the flue 5 to the precipitating or dust chamber.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
1. A method of treating materials yieldingsulphur-dioxide upon oxidation and preventing the production of the sulphur-diox-.
ide consisting of treating said materials within a temperature where sulphur-dioxtio ide dissociates into sulphur and oxygen and fixing said oxygen while dissociated from said sulphur with an oxidizable material.
2. A method of treating sulphide ores con- I which consists of introducing them in a di'-' vided condition into a gas mixture produced by heating an oxide of sulphur to dissocia- GEORGE CAMPBELL CARSON.
v Witnesses:
S. E. BRETH RTON, From HALL.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US170092A US1480743A (en) | 1917-05-21 | 1917-05-21 | Method of preventing sulphur dioxide in smelter gases |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US170092A US1480743A (en) | 1917-05-21 | 1917-05-21 | Method of preventing sulphur dioxide in smelter gases |
Publications (1)
Publication Number | Publication Date |
---|---|
US1480743A true US1480743A (en) | 1924-01-15 |
Family
ID=22618522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US170092A Expired - Lifetime US1480743A (en) | 1917-05-21 | 1917-05-21 | Method of preventing sulphur dioxide in smelter gases |
Country Status (1)
Country | Link |
---|---|
US (1) | US1480743A (en) |
-
1917
- 1917-05-21 US US170092A patent/US1480743A/en not_active Expired - Lifetime
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