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3925057 |
Process for recycling chlorine gas in the chlorination treatment of iron oxide ores containing titanium
Process for recycling chlorine gas in the selective chlorination treatment of iron oxide ores containing titanium for the purpose of obtaining ores enriched with titanium dioxide, which comprises...
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3910769 |
Apparatus for fluidized solid systems
Contacting apparatus chamber having a grid structure positioned therein, characterized by downwardly projecting frustoconic shaped nozzles, which extend below the lower face of the plate defining...
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3906077 |
Purification of ferric chloride
The present invention relates to a process for the purification of ferric chloride. Broadly, the process comprises introducing a mixture of ferric chloride and non-volatile impurities into a...
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3895092 |
Continuous process for producing barium and strontium hard ferrites starting from iron oxides
A continuous process is disclosed for producing barium or strontium ferrites, starting from iron oxide and barium or strontium carbonates, wherein A. a slurry consisting of iron oxide, barium or...
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3877929 |
Process for reducing iron content of titaniferous material
A process for the beneficiation of ironcontaining titaniferous material in which, during one stage of the beneficiation, the iron content of the material is reduced with hydrogen in the presence of...
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3865920 |
Process for beneficiating a titaniferous ore and production of chlorine and iron oxide
Chlorine and iron oxide are produced by the oxidation of iron chlorides and mixtures thereof, produced in the chloride process for beneficiating titaniferous ores, by injecting oxygen in the gas...
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3656933 |
ROASTING MATERIALS CONTAINING ROASTABLE SULFUR WITH ARSENIC AND/OR ANTIMONY
A fluidized-bed method of roasting sulfidic materials containing arsenic and/or antimony with a gas containing oxygen with separate supply of the gas containing oxygen for the preroasting in a...
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3649245 |
PROCESS FOR THE PURIFICATION OF PYRITE CINDERS FROM NONFERROUS METALS, FROM ARSENIC AND FROM SULFUR
A process for the purification of pyrite and pyrrhotite cinders from nonferrous metals, from arsenic and from sulfur. The process is characteristic in that the reduction of the hematite to...
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3632312 |
PRODUCTION OF HIGH-STRENGTH SULFUR DIOXIDE
Roasting sulfide ore to produce high-strength SO 2 using steam as the fluidizing agent and commercial grade O 2 as the oxidizing agent to produce a mixture of SO 2 and steam and condensing the...
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3617255 |
PROCESS FOR REPRESSING SULFUR TRIOXIDE FORMATION IN IRON SULFIDE ROASTING
A process for magnetite-yielding roasting of sulfide-containing materials for repressing the formation of SO 3 in the resulting roaster gas; the process comprising the step of introducing an...
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3499754 |
PROCESS FOR PURIFYING PYRITE CINDERS BY REMOVAL OF NONFERROUS METALS
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3451804 |
METHOD IN CONNECTION WITH ROASTING,ESPECIALLY WITH SULPHATIZING OR CHLORIDIZING ROASTING
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3433624 |
TREATMENT OF PULVERULENT MATERIALS
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3427149 |
PROCESS FOR REMOVING ARSENIC FROM IRON ORE
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3421884 |
METHOD FOR CARRYING OUT GASSOLIDS REACTIONS
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3401032 |
Removal of impurities from nickel oxide granules
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3386815 |
Process for roasting iron sulfide materials
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3295924 |
Process for recovering iron, titanium and aluminum from the red slurries obtained in processing bauxite by the bayer process
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3276858 |
Method for carrying out gas-solids reactions
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3233983 |
Calcium control in crystallization of sodium sesquicarbonate
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3220796 |
Process for the removal of arsenic or arsenic compounds
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3216817 |
Beneficiation of chromium ore
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3210180 |
Temperature control of iron ore reducing fluidized beds
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3189437 |
Process for roasting by fluidization, more particularly for magnetizing roasting
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3169853 |
Process for roasting iron sulfides to form sulfur dioxide and magnetite
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3167419 |
Process for the stagewise fluidized bed roasting of sulfidic iron minerals
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3160496 |
Process for treating ironpyrites
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3160499 |
Method for reducing metal oxides
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3094409 |
Method for roasting sulfides
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3067005 |
Fixation of unreacted chlorine in titanium tetrachloride manufacture
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2999733 |
Chlorination processes
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2978297 |
Production of gases containing sulfur dioxide and of solid roasted products free from arsenic and antimony by fluidized layer roasting of materials containing roastable sulfur in addition to arsenic and/or antimony
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2974009 |
Production of titanium tetrachloride
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2965449 |
Heat recovery in fluosolids process
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2943929 |
Process for roasting sulfides
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2933373 |
Beneficiation of titaniferous iron ores
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2930687 |
Roasting of ores
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2889203 |
Production of gases containing sulfur dioxide
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2885259 |
Process for recovery of constituents of ores
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2867526 |
Method for removing arsenic from arsenopyrite ores
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2835557 |
Method of producing nickel by the carbonyl process
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2784058 |
Production of titanium tetrachloride
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2780537 |
Process of treating pulverulent iron oxides
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3681046 |
Title is not available
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3758293 |
Title is not available
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3589866 |
Title is not available
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3669623 |
Title is not available
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3674462 |
Title is not available
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3803288 |
Title is not available
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