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Two leaching liquid to solid ratio of indium enter solution, which normally takes 2 or 3 times leaching, reduced to (2-3): 1, the final residue containing indium 0.05 percent.
electrolytic
leaching the slot to the use of steel liner granite effect better, their choice can be calculated with reference to formula
20 – replacement slot; 21 – and slots; 22 – electrolysis chamber; 23 – ion-exchange column
extraction tank width
(a) leaching groove
temperature 50 ~ 60 ℃ cleaning pressure 0.3 ~ 0.5MPa
crude lead oxide by
2, in addition to thallium
(a) Preparation of solid to liquid
extractant P204 chemical name for two -2 – Kiki B phosphorylation, are acidic extractant, molecular weight 322, the packing density of 0.9694 ~ 0.97g/cm3 The viscosity of 25.92 cps, is pale yellow oily liquid, transparent, almost odorless, soluble in benzene, petroleum, kerosene and other organic solvents. Solubility in water is 0.012g / L; 1mol sulfuric acid, 0.017g / L.
6 extraction, cadmium acid leaching solution of the Shen silicon
operating temperature 20 ~ 30 ℃, the organic phase flow rate of 0.42m3 / (m2 · h)
obtained by calculation of the extraction tank. The main dimensions shown in Figure 3.
Operating Temperature 20 ~ 30 ℃ organic phase flow rate of 0.42m3 / (m2 · h)
power indium thallium and cadmium higher, shall be removed chemically, and its operating conditions are as follows:
pickling liquor containing sulfuric acid 80 ~ 100g/LO/A = 5:1
crude indium melting burning glycerol under the protection of the cast anode, outside analysis of filter paper, wrapped in two layers, and then set pressed silk bags, to avoid electrolysis anode mud from falling into the electrolyte. The finished product of the electrolysis of qualified electrical indium in glycerol under the protection of melting, cast sheet of 1mm thick, is the cathode.
N = V (t/24V)
the main component of acid leaching solution of cadmium (g / L): Zn 70 ~ 90; of Cd 20 ~ 30; In 0.1 ~ 0.5; Fe5 ~ 10; of SiO2 0.2 ~ 0.6; of H2SO4 20 ~ 30.
power indium need for the secondary electrolysis, the operating conditions with a the same table for the secondary electrolysis precipitation instance of cathode quality.
stir the 1 ~ 2h precipitation 3 ~ 4h
, L = 10l = 10 × 0.3 = 3m
(c) of the electrolyzer
W = 5l = 5 × 0.3 = 1.5m
2, the electrolyte manufacturing
(b) indium production and raw material consumption per unit instance (kg / kg indium)
plus glue the amount of SiO2 content of 10% to 12%
Figure 4 indium production workshop planar configuration instance
anti-stripping agent concentration of hydrochloric acid 6mol/LO/A = 5:1
Figure 3 extraction tank size indicate
(b) where the solvent extraction
Q- processing liquid volume, m3;
electrolysis conditions: temperature 20 ~ 30 ℃; current density 60 ~ 80A/m2 to; cell voltage 0.25 ~ 0.3V away with the very center of 4mm, the electrolysis cycle 6 ~ 7d, current efficiency 96%, the residual polar rate of 45% to 50%, electrolytic recovery of> 95%.
zinc oxide leaching
example
(d) pressure group melting
Containing the indium oxide dross leaching with sulfuric acid, so that the indium into Indium sulfate into solution. Leaching technology operating conditions instance as follows:
pressure 0.2 ~ 0.3MPa
layered sediment flow rate of 1.84m3 / (m2 · h) the raffinate residual indium <0.001g / L;
(c ) replacement
read: six of the precious metal encyclopedic knowledge and information
configuration see Figure
1 – leaching slot; 2 – storage sump; 3 – graphite cooler; – ventilation ducts; 5 – plate and frame filter press;
industrial hydrochloric acid 310 ~ 330 zinc plate (99.99%) 4 ~ 5
power indium dissolved in analytical grade sulfuric acid, the addition of NaCl and animal glue, the preparation of the following composition : In80 ~ 100g / L, NaCl80 ~ 100g / L, Gelatine 0.5 ~ 1g / L, pH 2 ~ 3.
blast 5 ~ 6h scum rate of 25% ~ 30%
indium extraction rate of> 97%.
filter
Table 3 as an extraction liquid and the raffinate composition instance.
Figure 4 for indium production plane configuration examples.
this solution Shen silicon operating conditions with zinc oxide liquid Shen silicon, but it should be a separate extraction, so that the raffinate back to the cadmium system.
analytical grade sulfuric acid from 0.01 to 0.02 vapor 2000 3000
l-mixing chamber side length, m.
type Q-handle liquid volume, m3;
temperature 85 ~ 90 ℃ liquid to solid ratio (6): 1
6 – lead slag leaching slot; – vacuum delivery devices ; 8 – extraction slot; – Low tank;
P204 organic solvent extraction into the organic phase; pickling to remove heavy metal impurities, and then hydrochloric acid stripping, too high concentration of indium chloride indium enrichment factor of up to 100 ~ 300 times.
t-liquid mixing chamber residence time, min;
electrolyzer computing and electrolytic refining trough the same, the following annual output of 700 ~ 800kg electric indium electrolyzer instance.
2011 09 23
2, the effective height h of the extraction tank
1, single-stage extraction of the mixing chamber side length L
industrial sulfuric acid 300 to 320 glycerol 2.4 to 3 part of the
organic phase the heavy metal ions can be used dilute sulfuric acid wash removal the instance of the technical operating conditions are as follows:
Table 4 Melting crude indium composition, (e) of crude indium electrolytic
temperature 70 ~~ 80 ° C
FOR V-day processing pulp or dissolved, m3; higher
oxidation the zinc leaching solution and cadmium acid leaching solution containing silica (SiO2), and the fluctuation range. In practice, the liquid containing silica more than 0.5g / L, the extraction process in the third phase. The extraction process liquid to keep their high acidity, or the distribution coefficient of copper and cadmium in the extraction decreased significantly; difficult to precipitation of colloidal silica is easy to form in acidic solution, and therefore must be added to animal glue Shen silicon. Solution containing
(b) extraction box of Si1 ~ 3g / L, plus plastic 0.1 ~ 0.3g / L allows silicon dioxide is reduced to 0.5g / L, Shen silicon technology operating conditions instance is as follows:
Temperature 20 ~ 30 ℃ liquid into the mixing chamber speed of 10m3 / (m2 · h);
extract the series of ten, in the organic phase after extraction tank length of
washing with concentrated hydrochloric acid stripping to get InCl3 solution. Examples are as follows: the technical operating conditions
operating cycle of ~ 8h
three technical operating conditions
extract the instance of the technical operating conditions are as follows:
Table 2 scum and refined lead composition,% the scum leaching
Table 3 extraction liquid and the raffinate composition, g / L, 2, acidic
of P204 commonly 3 to 4 times 200 kerosene diluted to reduce its viscosity and density, easy and The aqueous phase stratification. 200 kerosene density 0.78g/cm3 chemical composition of the C13 ~ 15 alkane mixture, not the presence of olefin.
replacement time of 4 ~ 5h after replacement fluid containing indium <0.01g / L
five main equipment selection
temperature 170 ~ 180 ℃, glycerol: indium = 1:10; mechanical agitation, KI The addition amount of the cadmium content of 2 to 3 times 1.5 ~ 2.0h / time. The cadmium content of the different repeated operation of 2 or 3 times according to the analysis of the situation.
stock solution containing indium 24m3, seeking the main dimensions of the extraction tank. the
acidity 3 4mol replacement temperature 50 ~ 60 ° C
Shen silicon solution with corundum filter filter. Technical operation conditions were as follows:
200 kerosene 2.4
after cadmium removal to maintain the temperature of 170 ~ 180 ℃, and with mechanical stirring in glycerol: indium = 1: (5 ~ 6), through hydrogen chloride gas is about 30min . Fourth, the technical and economic indicators
t-operating cycle, h, leaching of 8 purification to take 4 to 6, a replacement taking 30 ~ 40min, the second replacement to take 40 ~ 50min.
industrial caustic soda 2.5 to 3 filter paper 2 / kg of indium
10 – filtrate middle slot; 11 – suction filter; 12 – mud trough; 13 – pump; 14 – Jan dispenser;
extraction agent of P204: kerosene 1:2 4 O/A1: 15;
clarify the effective volume of the chamber to the mixing chamber 4 times, too:
Table 2 for the scum and refined lead component instance.
(a) the process of indium recoveries instance,%
leaching the 96 ~ 92 ~ 96 replacement 98 extraction 95 to 97 stripping 98 to 99 melting 92 to 93 pickling 95 ~ 97 electrolytic 95 ~ 96 .
electrolyzer specifications for the 190 × 380 × 265mm, made of plastic or plexiglass of 8 ~ 10mm thick, the number of 16, according to the secondary electrolysis is divided into two groups of eight. The specifications of the anode 170 × 210mm, thickness 6mm, the outer edge of plate to lug distance is 35mm, so the anode total height is 240mm, each anode weight 2.4 ~ 2.5kg per slot 7, the cathode of 1mm thick stainless steel, titanium plate size slightly larger than the anode.
of P204 0.8 ~ 1 power 100 ~ 110kW · h
Table 5 precipitation cathode quality,% (six) electric indium refined
V – effective volume of the selected slot, m3, and for the slot geometry volume of 0.85 ~ 0.9;
stripping
leaching in the mechanical agitation tank, using the period of acid leaching, the end of acid 20 ~ 30g / L The main component of zinc oxide is soluble metal oxide, soluble in dilute sulfuric acid solution, the leaching rate is high, residue only 1% to 5%, so right leaching about 10 cycles and then slagging. Zinc oxide leaching instance of the technical operating conditions are as follows: 2, Shen silicon
Figure 2 indium extraction process
temperature blast pressure of 750 ~ 800 ℃ 0.2 ~ 0.3MPa
indium extraction generally square box-type extraction tank, each single-stage extraction tank is divided into the mixing chamber and clarify the room in two parts. To clarify the effective volume of the room four times the mixing chamber. Series of extraction tank according to the experimental figures to determine, generally three or four extraction three pickling and three stripping, a total of nine or ten. The flow rate of liquid in the mixing chamber to take 10 ~ 12m3 / (m2 · h), the residence time of 4 ~ 5min, stirring speed of 600 ~ 650r/min.
beginning acid 110 ~ 120g / L, the final acid 20 ~ 30g / L
the filtration rate of 0.8 ~ 1m3 / (m2 · h)
use of indium in zinc panels the replacement InCl3 solution required in confined ventilation slot to maintain the negative pressure operation, to prevent the arsine generated in the reaction process of escape. Replacement operating conditions instance are as follows:
v-mixing chamber liquid flow rate, m3 / (m2 · h) The deposition of sponge indium
replacement, 3 to 4 times of washing with water, oil press, pressed into a corporation (as group pressure greater than 1.5MPa). Clumps in the liquid caustic soda under the protection of melting ingots. The melting temperature of 350 ~ 450 ℃. Table 4 shows the melting crude indium composition instance.
Huludao Zinc extraction examples are as follows:
H = 1.5 × 0.75 = 1.13m, take 1.15m
3, the total height of the extraction tank for the effective height of 1.5 times. the
extract the pickling and stripping in the same box-type extraction tank. Extraction box is divided into 10, four extraction three pickling, three stripping. Water phase and organic phase countercurrent extraction, the agitator speed of 600 ~ 650r/min extraction process is shown in Figure 2.
containing indium crude lead after the melting of cast iron pot, the drum into the compressed air mixing oxide, indium and impurity metal oxide into dross, but enriched with lead separation. At the same time, the output of refined lead containing BiO0.1%. Blast is usually 5 ~ 6h, indium oxide that the maturational process, the molten lead residual indium from 0.001% to 0.002%, the scum rate of 25% to 30%, to be repeated every pot slag blast 4 to 5 times scum pulverized by ball milling, using 0.42mm sieve sieve sieve lead shot to return to re-oxidation. Oxidation technology instance of the operating conditions are as follows:
h = [the Qt / (24 × 60 × l2)] m
plate manufacturing
1, with the exception of cadmium
15 – slag chute ; 16 – oxidation furnace; 17 – air compressor; 18 – cylindrical screen; 19 – ball mill;

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October 23, 2010
The mastermind behind the Victorian Labor propaganda barrage has defended the attacks on an independent candidate in Saturday state by-election, saying they are a statement of fact. On the eve of the by-election in the safe Putian Sport

p> The brain behind barrage of propaganda Victorian labour defended attacks against an independent candidate State Saturday of the election, saying that they are a statement of fact. visited Kairouz Kings Park Primary School at St Albans the last day of campaign on Friday. Brumby, said Friday “it not Mr. Twentyman, a delegate to the youth, wants to build houses in the suburbs of Melbourne Western external safe injecting heroin. Twentyman said that it was dirty politics which goes back to a position he has held ten years when the heroine was common. put in place to make voting work .. defended Newnham seeming contradiction, saying: Mr. Twentyman was a vote for the Liberal Herve Leger Scoop Neck because he could win with their preferences. < / p> A the eve of the by-election in the seat of the safe working of the Kororoit, ALP Secretary of State said Stephen Newnham campaign against independent the Twentyman may offend some but the message of the work was on the mark. “” we blocked the facts on what the Twentyman thought, represents and what he has done “, said Mr. Twentyman policy and that it is a question of fact. now the heroine is scarce, happens in dribs and drabs, there is nothing such that the carnage of 1999 when 10 Victorians dying weekly “, said Mr. his comments came as new flyers ALP has emerged, telling voters that Mr.” in 1999, it has approved thrust injection by the former head of the Labour opposition room and now Premier John Brumby. Twentyman. “ Mr Brumby said that he was” quite accurate “to say that a vote for Mr. labour candidate Marlene Kairouz stayed away from the debate, refusing to say if it approved the tactic of his party. this policy has been abandoned after earned Labor Government. / p>. and he made no apologies for the prospectus containing Mr. “For everyone I am Prime Minister of the State there is no safe injection rooms shut down-that is the labour party policy”. Twentyman was de facto candidate Manage your time to earn more in less time of the Liberal Party. “ the Prime Minister and Ms. Twentyman and sordid images of syringes. the prospectus followed equipment campaign stating that” a vote for the Twentyman is a vote for the liberal “. Twentyman” Mr Brumby is its clear disorder attitude change, but the acceptance of Mr. “

<>> pp the Parti liberal is preferencing M. Twentyman but its preferences go to work Kororoit Liberal Party candidate is, Jenny Matic, while Marcus Power is a standing for the Greens. work holds headquarters by western suburbs by a margin of 26%.
November 01, 2010

Barbie Byon Lars Pepper abroad essential English vocabulary – food class []
This is a dessert, these two are NEWNHAM COLLEGE QUEEN, taste pretty good. Last PETERHOUSE eat dessert, sweet, some tired ~

the Fitzwilliam College Our dinning HALL. Day friends of the college invited us to dinner in the past, happened to run into the FORMAL staff is preparing the evening – General FORMAL are officially began in 19:30 Before this, if the students do not participate in the evening FORMAL before this already eaten dinner. Students to eat their own college, respective Institute respective Institute of Fanka, a meal takes about 4-5 pounds or so, but FORMAL relatively expensive, usually more than ten pounds. In the upper left corner of the picture on the right foot tables, are generally used for the Academy. The general FORMAL, students first admission, sit down each other hot on and suddenly hear the sound Luo Xiang, we awe to stand quiet, I saw a few wearing the same black GOWN academicians came in, seated, led by an Academician Latin prayer, did not understand the prayer finished, and then sit down, we also will sit down and begin to enjoy the food – some School meals can also, some would not be flattered. According to western etiquette, but also spearhead disk (STARTER) is generally soup or side dishes, plus bread and butter; then the main course (MAIN COURSE), a meat accompanied by vegetables (vegetarians are generally the meat replaced with mushrooms); then began to dessert (PASTES AND), the last drink COFFEE or TEA to spend eloquent two hours. General students have almost completed the dessert, but also hear Luo Xiang, all stood up and cry, quiet, academicians began to rumble Latin said, some take in English, others do not, academicians thereon the first to leave, then the students began to quarrel even more crazy – can often encounter any student birthday, everyone in unison to give him / her to sing Happy Birthday! 2011 08 17
left NEWNHAM s recipes, iphone to pc transfer the right is the cover of QUEEN, menu.
high-end parties tend to prevail in her action
163 blog safety reminder: the system detects your current password less secure, For your account security, we recommend you to timely change the password immediately amend the closing < br /> QUEEN, main course some “slack” of the boys sitting opposite me said, only three little lamb, little good! Potatoes, iphone pc transfer vegetables Well, of course, more to the point, that the juice sprinkled on the meat above called GRAVY
the world greatest tragedy is that you watched a waited 20 minutes public open car from the station not far to go, and you e wearing the narrow skirt is difficult to take significant steps had to moan and groan in the back, the reason why wear such a lady, night FORMAL – Fortunately, this tragedy in fact did not happen to me, but only one I had in mind to imagine it, because in that dress, and quickly went to the station, always worried that bus happened that at this time coming – Fortunately Later, the luck is not so bad. Soon, however, that embarrassment finally met – when we had finished our College FORMAL, the next day was invited to the Queens College to eat FORMAL of when me and a girlfriend dressed ladies, stepping high heels, awkward running on the Jianhe the edge to catch up with them Institute of 19:30 began FORMAL, a scene like this is absolutely unprecedented – you seen the lady bolted?
But regardless of casual or a formal old, as long as it is to eat FORMAL, whether it is male or female, are required to dress very formally, which is the beginning of write, even though these clothes in their daily rarely show up in life, but once encountered FORMAL sense of the word was out debut. Our students are required to wear black college uniform GOWN (see “participate in the graduation ceremony of Cambridge”), the quilt in GOWN inside of, men generally have a suit and tie or black bow tie, women tend to be low-cut strapless evening dress – of course, some women, like us, naturally conservative, are not used too blatantly, and thus formally some of the can, it is said the national costume is also a good choice, but unfortunately with the cheongsam is to pressure the bottom, forgot coming out. Sometimes walking in the streets of Cambridge, see clusters of Cambridge students set loose black colleges serving in the wind goes through the women gorgeously solemn silence of the men, in all likelihood, to eat FORMAL go. Well, did not talk much on the map.
Tags: newnham

October 22, 2010
The mastermind behind Victorian Labor propaganda barrage has defended the attacks on an independent candidate in Saturday state by-election, saying they are a statement of fact.
On the eve of the by-election in the safe Labor seat of Kororoit, ALP state secretary Stephen Newnham said the campaign against independent Les Twentyman might offend some but Labor message was on the mark.
His comments came as new ALP flyers emerged, telling voters that Mr Twentyman, a youth worker, wants to build safe heroin injecting houses in their suburbs in Melbourne outer west.
The flyers follow campaign material stating that “a vote for Les Twentyman is a vote for the Liberals “.
The Putian shoes Event business Liberal Party, is preferencing Mr. Twentyman but his the preferences will go to the Labor
Mr. Newnham defended the apparent contradiction, saying Mr Twentyman was a de facto Liberal Party candidate – set up to take votes from Labor.
And he made no apologies for the flyers featuring Mr Twentyman and lurid images of syringes.
“We have stuck to the facts about what Les Twentyman believes, stands for and what he has done,” Mr Newnham told AAP.
“All of that is factually accurate, people can take a view they don like it but they can argue the facts. “
Mr Twentyman said it was grubby politics dating back to a decade old position he held when heroin was rife.

In 1999 he endorsed an injecting room push by former Labor opposition leader, and now premier, John Brumby.
That policy was abandoned after Labor won government.

“The drugs culture has changed … now heroin is in short supply, it comes in dribs and drabs, it nothing like the carnage of 1999 when 10 Victorians were dying a week,” Mr Twentyman said.
Mr Web site LIU flowers work the Brumby made his change of Heart clear but had trouble trouble accepting Mr Twentyman
“For all of the Putian the Zui hammer shoes Rong Ai Hu Cai Jing Shi?