公开(公告)号：US3627481A

公开(公告)日：1971-12-14

申请号：US3627481D

申请日：1969-05-06

申请人： MONTEDISON SPA

发明人： SIRONI GIUSEPPE ,  SACERDOTE RENZO ,  FERRERO FRANCESCO

IPC分类号： C01G23/02

CPC分类号： C01G23/024

摘要： A PROCESS IS DISCLOSED FOR THE PURIFICATION OF TITANIUM TETRACHLORIDE FROM VANADIUM COMPOUNDS BY TREATMENT WITH H2S, WHEREIN THE HOT GASES COMING FROM THE CHLORINATION STEP OF THE TITANIFEROUS MATERIAL, CONTAINING TICL4 WITH IMPURITIES, ARE COOLED DOWN TO 130-180*C. BY INJECTION AND VAPORIZATION OF LIQUID TICL4 AND AT THE SAME TIME ARE TREATED WITH H2S, THEREBY OBTAINING A VANADIUM-FREE GASEOUS PHASE CONTAINING TICL4 AND A TICL4-FREE SOLID PHASE CONTAINING VANADIUM.

公开(公告)号：US3499754A

公开(公告)日：1970-03-10

申请号：US3499754D

申请日：1967-06-27

申请人： MONTEDISON SPA

发明人： COLOMBO UMBERTO ,  MINI ITI ,  SIRONI GIUSEPPE

IPC分类号： C22B1/08 ,  C22B1/10 ,  C22B3/10 ,  C22B7/00 ,  C22B7/04 ,  C22B9/10 ,  C21B1/00 ,  C22B1/00

CPC分类号： C22B7/04 ,  C22B1/08 ,  C22B1/10 ,  C22B3/10 ,  C22B7/002 ,  C22B9/10 ,  Y02P10/234

公开(公告)号：US3649245A

公开(公告)日：1972-03-14

申请号：US3649245D

申请日：1969-07-24

申请人： MONTEDISON SPA

发明人： COLOMBO UMBERTO ,  SIRONI GIUSEPPE ,  VIVIANI BRUNO ,  COLOMBINI ARIANO

IPC分类号： C22B1/10 ,  C22B1/08 ,  C22B1/11 ,  C22B7/04

CPC分类号： C22B1/08

摘要： 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 magnetite is carried out in a fluid bed by direct injection of a hydrocarbon fuel and air in deficiency, at 850*-950* C. and with contact times from 15 to 45 minutes, up to a degree of reduction equal to from 10-90 percent, and in the presence of small quantities of HC1. The chlorination and reoxidation of the thus produced hot cinders is carried out in a fluid bed reactor with air and a chlorinating agent, at temperatures of from 650*1,000* C., preferably at 850*-950* C. with contact time from 20 to 150 minutes, and that the gases leaving the reactor contain less than 0.5 percent by volume of free oxygen.

摘要翻译： 一种从有色金属，从砷和硫中纯化黄铁矿和磁黄铁矿渣的方法。 该方法的特征在于，将赤铁矿还原成磁铁矿是在流化床中通过直接注入烃类燃料和空气在850-950℃和接触时间从15至45分钟进行的， 达到一定程度的降低，等于10-90％，并且存在少量HC1。 这样生产的热渣的氯化和再氧化在具有空气和氯化剂的流化床反应器中在650℃-1000℃，优选在850-950℃下进行，接触时间从 20至150分钟，并且离开反应器的气体含有小于0.5体积％的游离氧。

公开(公告)号：US3895092A

公开(公告)日：1975-07-15

申请号：US28905472

申请日：1972-09-14

申请人： MONTEDISON SPA

发明人： SIRONI GIUSEPPE ,  FAGHERAZZI GIULIANO ,  FERRERO FRANCESCO ,  PARRINI GIANFRANCO

IPC分类号： C01G49/00 ,  C04B35/26 ,  H01F1/11 ,  C01F11/00

CPC分类号： C04B35/2683

摘要： 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 STRONTIUM CARBONATE, WATER AND BINDER, IS DRIED AND GRANULATED, UTILIZING THE HOT GASES FLOWING FROM STEP (B) SUPPLEMENTED WITH HOT BURNT GASES OBTAINED SEPARATELY; B. THE GRANULES OBTAINED IN STEP (A) ARE CALCINED, FOR 0.5-4 HOURS AT 950*-1150*C, in a fluid bed reactor, heated by combustion, inside the fluid bed, of a carbonaceous, nonsulphurated fuel with air; and C. THE FERRITE OBTAINED IS COOLED AND WET GROUND. The atomic ratio between the iron and the barium or strontium ranges from 11.5:1 to 12:1. The iron oxide and the carbonate are preferably in the form of a submicronic powder.

摘要翻译： 公开了用于生产钡或锶铁氧体的连续方法，从氧化铁和钡或碳酸锶开始，其中A.将氧化亚铁，碳酸钡或碳酸铋，水和粘合剂制成浆料并利用热气体进行粉碎和粉碎 从步骤（B）流出，分别获得高热量气体补充; B.在步骤（A）中获得的颗粒在950℃-1150℃下经0.5-4小时，在流化床反应器中，通过燃烧在燃料中，在含碳的非硫化燃料的空气中加热; 和C.获得的石英被冷却和湿地。

公开(公告)号：US3625645A

公开(公告)日：1971-12-07

申请号：US3625645D

申请日：1969-05-16

申请人： MONTEDISON SPA

发明人： FERRERO FRANCESCO ,  SIRONI GIUSEPPE ,  GARBERI ANGELO

IPC分类号： C01G31/00 ,  C01G31/04 ,  C22B59/00

CPC分类号： C01G31/04

摘要： A PROCESS IS DISCLOSED FRO RECOVERING VANADIUM FROM SOLID TICL4-FREE RESIDUES OBTAINED IN THE PURIFICATION OF RAW TICL4 WITH H2S, WHEREIN THE SOLID RESIDUES ARE TREATED WITH OXYGEN OR AN OXYGEN-CONTAINING GS AT TEMPERATURES BETWEEN 150* AND 200*C., THEREBY OBTAINING A VOCL3CONTAINING GAS FROM WHICH THE VOCL3 IS SEPARATED IN A PRACTICALLY PURE STATE BY RECTIFICATION. THE SOLID TICL4-FREE RESIDUES ARE OBTAINED FROM THE PURIFICATION SLUDGES OF THE LIQUID RAW TICL4 BY DRYING SAME AT TEMPERATURE OF 150*180*C., IN A STREAM OF INERT GAS, PREFERABLY NITROGEN.

公开(公告)号：US3649186A

公开(公告)日：1972-03-14

申请号：US3649186D

申请日：1968-01-25

申请人： MONTEDISON SPA ,  MONTIPONI E MONTEVECCHIO SPA ,  GIUSEPPE SIRONT ,  AMOS VASCHETTI ,  UMBERTO COLOMBO ,  GIOVANNI SCACCIATI

发明人： COLOMBO UMBERTO ,  SCACCIATI GIOVANNI ,  SIRONI GIUSEPPE ,  VASCHETTI AMOS

IPC分类号： C01G9/02 ,  C22B19/04 ,  C22B19/34 ,  B01D51/00 ,  B01D59/28

CPC分类号： C22B19/04 ,  C01G9/02 ,  C22B19/34 ,  Y02P20/129

摘要： A continuous process for obtaining zinc oxide of a grade higher than 75 percent from oxidized zinciferous ores, which comprises: Preheating the zinc-containing mineral and calcining it at temperatures above 800* C. (preferably at 900*-1,000* C.) by the combustion products of the gases leaving the reducing reactor. Treating the calcined ore in a fluidized bed at a temperature of from 1,000 to 1,200* C. with reducing gases obtained by direct injection of a hydrocarbon fuel and of an amount of air less than stoichiometric into the fluid bed and discharging the zinc-free residues. Burning the reducing gas of the reduction stage containing the metallic zinc vapors with air to produce a burnt gas containing CO2, H2O and ZnO. Using the burnt gas to preheat the air necessary for the partial combustion of the fuel by indirect heat exchange and the incoming zinciferous ore by direct heat exchange. Subjecting the off gases, after having released part of their heat to the air and to the ore, to separation in order to recover the zinc oxide.

摘要翻译： 从氧化的含锌矿石中获得高于75％的氧化锌的连续方法，其包括：将含锌矿物预加热并在高于800℃（优选在900℃-1000℃）下煅烧，由 离开还原反应器的气体的燃烧产物。 在流化床中在1000至1200℃的温度下处理煅烧的矿石，通过直接将烃燃料和少于化学计量的空气量直接注入流化床而获得的还原气体并排出无锌残渣 。 用空气燃烧含有金属锌蒸汽的还原阶段的还原气体，产生含有CO 2，H 2 O和ZnO的燃烧气体。 使用燃烧气体通过间接热交换预热燃料部分燃烧所需的空气，并通过直接热交换预热进入的含锌矿石。 在将部分热量释放到空气和矿石之后，将废气进行分离以回收氧化锌。

公开(公告)号：US3554733A

公开(公告)日：1971-01-12

申请号：US3554733D

申请日：1967-06-29

申请人： MONTEDISON SPA

发明人： COLOMBO UMBERTO ,  SIRONI GIUSEPPE

IPC分类号： C01G49/06 ,  C07C29/141 ,  C07C29/145 ,  C07C29/16 ,  C07C29/17 ,  C07F15/06 ,  C01G49/08

CPC分类号： C07F15/065 ,  C01G49/06 ,  C01P2006/80 ,  C07C29/141 ,  C07C29/145 ,  C07C29/16 ,  C07C29/175 ,  Y02P20/129 ,  Y10S423/02

摘要： A PROCESS FOR OBTAINING CONCENTRATED SULFUROUS GASES AND MAGNETITE OR IRON SPONGE WITH HIGH IRON CONTENT, WHICH ARE VALUBLE PRODUCTS FOR THE IRON-METALLURGIC IN DUSTRY, FROM HEPTAHYDRATE FERROUS SULFATE. THE PROCESS IS BROADLY CHARACTERIZED BY THE FOLLOWING SEQUENCE; (A) DEHYDRATION OF THE HEPTAHYDRATE FERROUS SULFATE TO THE MONOHYDRATE FORM; (B) THERMAL DECOMPOSITION OF THE MONOHYDRATE FERROUS SULFATE IN A FLUIDIZED BED; (C) REDUCTION OF THE HOT HERMATITIC ASHES IN A FLUIDIZED BED OR IN A ROTARY FURNACE, TO MAGNETITE OR TO SPONGE IRON; (D) MAGNETIC CONCENTRATION OF THE PRODUCT OBTAINED IN (C) WITH CONSEQUENT ELIMNATION OF THE IMPURITIES UNDESIRABLE IN IRON METALLURGY AND OBTAINMENT OF A CONCENTRATE OF HIGH FE GRADE; (E) PREHEATING OF THE AIR NECESSARY FOR OPERATIONS (A), (B) AND (C) BY MEANS OF HEAT EXCHANGE WITH THE HOT SULFUROUS GASES PRODUCED IN (B); AND (F) UTILIZATION OF THE SENSIBLE AND CHEMICAL HEAT OF THE GASES LEAVING THE REDUCTION (C) FOR THE THERMAL DECOMPOSITON OF THE MONOHYDRATE FERROUS SULFATE AND/OR FOR THE DEHYDRATION OF THE HEPTAHYDRATE FERROUS SULFATE TO THE MONOHYDRATE FORM.

公开(公告)号：US3479177A

公开(公告)日：1969-11-18

申请号：US3479177D

申请日：1967-10-19

申请人： MONTEDISON SPA

发明人： VERONICA GIACINTO ,  SIRONI GIUSEPPE ,  COLOMBINI ARIANO

IPC分类号： C22B1/02 ,  C22B1/11 ,  C22B1/14 ,  C21B1/02 ,  C22B33/00

CPC分类号： C22B1/11 ,  C22B1/02 ,  C22B1/14 ,  Y02P10/234