CS243759B1 - Process for processing anode sludge containing selenium, medium, nickel, silver and gold - Google Patents
Process for processing anode sludge containing selenium, medium, nickel, silver and gold Download PDFInfo
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- CS243759B1 CS243759B1 CS826256A CS625682A CS243759B1 CS 243759 B1 CS243759 B1 CS 243759B1 CS 826256 A CS826256 A CS 826256A CS 625682 A CS625682 A CS 625682A CS 243759 B1 CS243759 B1 CS 243759B1
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Abstract
Vynález spadá do oblasti hutníctva a týká sa sposobu spracovania anodového kalu, pričom sa z něho získá seíén, meď, nikel, striebro a zlato. - Účelom vynálezu je skrátenie doby vylúhovania praženca a zvýšenie vyťažnosti, pričom pri záverečnom tavení lúženca sa získá zliatina s obsahom 10 až 15 % hmotnosti striebra, v ktorej je koncentrované zlato. Uvedeného účelu sa dosiahne pražením anodového kalu a následným lúhovaním a tavením medziproduktov.The invention falls into the field of metallurgy and relates to a method of processing anode sludge, whereby selenium, copper, nickel, silver and gold are obtained from it. - The purpose of the invention is to shorten the leaching time of the lye and increase the yield, whereby an alloy containing 10 to 15% of the weight of silver is obtained during the final melting of the lye, in which gold is concentrated. The stated purpose is achieved by roasting the anode sludge and subsequent leaching and melting of the intermediate products.
Description
Vynález spadá do oblasti hutníctva a týká sa spósobu spracovania anodového kalu, pričom sa z něho získá selén, meď, nikel, striebro a zlato.The present invention is in the field of metallurgy and relates to a process for treating anode sludge to obtain selenium, copper, nickel, silver and gold.
- Účelom vynálezu je skrátenie doby vylúhovania praženca a zvýšenie vyťažnosti, pričom pri záverečnom tavení lúženca sa získá zliatina s obsahom 10 až 15 % hmotnosti striebra, v ktorej je koncentrované zlato. Uvedeného účelu sa dosiahne pražením anodového kalu a následným lúhovaním a tavením medziproduktov. - · , 243759The purpose of the invention is to shorten the leaching time and to increase the yield, whereby the final melting of the lime yields an alloy containing 10 to 15% by weight of silver in which the gold is concentrated. This is achieved by roasting the anode sludge and then leaching and melting the intermediates. -, 243759
Vynález sa týká sposobu spracovania anódového kalu s obsahom selénu, médi, niklu, striebra a zlata, u ktorého rieši získáváme selénu do kysličníkového medziproduktu, médi a niklu do síranového roztoku, striebra a zlata do zliatiny s olovom a antimónom.The invention relates to a process for the treatment of anode sludge containing selenium, medium, nickel, silver and gold, in which the solution is obtained by selenium into an oxide intermediate, the medium and nickel into a sulfate solution, silver and gold into an alloy with lead and antimony.
V súčasnosti je vo svete známých niekoíko technologií spracovania anodového kalu obsahujúceho selen, med, nikel, striebro a zlato. Ich spoločným nedostatkom je odstraňovanie selénu pražením pri teplote 300 až 500 °C so zlúčeninami obsahujúcimi sodu. Pri tomto spracovaní sa získá seleničitan sodný, ktorý sa od praženca odděluje v samostatnej operách lúhovanla. Vzhladom na nízku teplotu praženia sa nikel a meď neuvolnia z komplexných zlúčenín a ich vylúhovanie z praženca je velmi zdlhavé. Lúženec sa podlá známých postupov taví so sodou a kremeňom za vzniku zliatiny s obsahom 60 až 90 % hmotnostných striebra. Pri tavení vznikajú trosky s obsahom striebra až 5 % hmotnostných, ktoré sa musia vracať do technologického procesu, čím sa zvyšuje časová a energetická náročnost spracovania.Several anode sludge treatment technologies containing selenium, honey, nickel, silver and gold are now known worldwide. Their common drawback is the removal of selenium by roasting at 300-500 ° C with soda-containing compounds. In this treatment, sodium selenite is obtained, which is separated from the roast in separate leaching operations. Due to the low roasting temperature, nickel and copper are not released from the complex compounds and their leaching from the roast is very lengthy. According to known methods, the collar is melted with sodium and quartz to form an alloy containing 60 to 90% by weight of silver. Melting produces slags with a silver content of up to 5% by weight, which must be returned to the process, thus increasing the time and energy consumption of the processing.
Vyššie uvedené nedostatky sa odstránia sposobom spracovania anodového kalu, obsahujúceho selén, med, nikel, striebro a zlato podl'a vynálezu, ktorého podstata spočívá v tom, že anodový kal sa praží v atmosféře s obsahom 10 až 21 % hmotnosti kyslíka pri teplote v rozmedzí 650 až 800 °C po dobu 40 až 80 minút. Tým sa oddělí selén od praženca, z ktorého sa následné luhováním kyselinou sírovou oddělí med a nikel. Získaný lúženec sa taví s prídavkom 10 až 25 % hmotnosti sody a 8 až 12 % hmotnosti redukovadla s obsahom uhlíka nad 60 % hmotnosti.The above drawbacks are overcome by a process for treating anode sludge containing selenium, honey, nickel, silver and gold according to the invention, which is characterized in that the anode sludge is roasted in an atmosphere containing 10 to 21% by weight of oxygen at a temperature in the range 650-800 ° C for 40-80 minutes. This separates the selenium from the roast, from which the honey and nickel are separated by subsequent leaching with sulfuric acid. The resulting glue is melted with the addition of 10 to 25% by weight of soda and 8 to 12% by weight of a reducing agent with a carbon content above 60% by weight.
Pražením anodového kalu selén odprchá ako kysličník, ktorý sa zachytává v prachovej formě v odprašovacom zariadení. Přitom sa komplexně zlúčeniny kysličníkov médi a niklu rozložia, čím sa skráti doba ich vyluhovania z praženca a výťažnosť sa zvýši o 10 %. Pri redukčnom tavení lúženca za přítomnosti pevného redukovadla sa získá zliatina s obsahom 10 až 15 % hmotnosti striebra, v ktorej je koncentrované zlato. Získaná troska obsahuje 0,04 % hmotnosti striebra.By roasting the anode sludge, selenium evaporates as an oxide, which is collected in powder form in a de-dusting device. In this process, the compounds of the oxides are completely decomposed by the medium and the nickel, which shortens the leaching time from the roast and increases the yield by 10%. Reductive melting of the leach in the presence of a solid reducing agent yields an alloy containing 10-15% by weight of silver in which the gold is concentrated. The slag obtained contains 0.04% by weight of silver.
Příklad 1Example 1
Anodový kal o zložení 2 % hmotnosti selénu, 10,5 % hmotnosti médi, 0,71 % hmotnosti niklu a 6,22 % hmotnosti striebra sa pražil pri teplote 300 °C po dobu 60 minút v atmosféře vzduchu. Získal sa praženec s obsahom 0,11 % hmotnosti selénu, 12,5 % hmotnosti médi, 0,85 % hmotnosti niklu a 7,4 percent striebra. Účinnost odpraženia selénu bola 95 % a zachytený úlet obsahoval 55 % hmotnosti selénu. Praženec sa lúhoval v roztoku s obsahom 185 g kyseliny sírovej v litri destilovanej vody pri hmotnostnom poměre kvapalnej fázy k pevnej rovnom 3:1, teplote 70 °C a době lúhovania 3,5 hodiny. Účinnost vylúhovania bola 95 % médi a 80 % niklu. Získaný lúženec sa tavil v grafitovom kelímku s přísadou 10 % hmotnosti sody a 10 % hmotnosti koksu z hmotnosti vsádzky pod vrstvou dřeveného koksu. Získá sa kovová zliatina s obsahom 11,5 % hmotnosti striebra a troska s obsahom 0,007 % hmotnosti striebra.Anode sludge of 2% selenium, 10.5% medium, 0.71% nickel and 6.22% silver was roasted at 300 ° C for 60 minutes in an air atmosphere. Roast was obtained containing 0.11% by weight of selenium, 12.5% by weight of medium, 0.85% by weight of nickel and 7.4% of silver. Selenium depletion efficiency was 95% and the entrained drift contained 55% selenium by weight. The roast was leached in a solution containing 185 g of sulfuric acid per liter of distilled water at a liquid to solid ratio of 3: 1 by weight, a temperature of 70 ° C and a leaching time of 3.5 hours. The leaching efficiency was 95% medium and 80% nickel. The obtained leach was melted in a graphite crucible with the addition of 10% by weight of soda and 10% by weight of coke from the weight of the batch under the layer of wood coke. A metal alloy containing 11.5% by weight of silver and a slag containing 0.007% by weight of silver are obtained.
Příklad 2Example 2
Anodový kal o zložení 2,14 % hmotnosti selénu, 10,8 % hmotnosti médi, 0,82 % hmotnosti niklu a 6,24 % hmotnosti striebra sa pražil pri teplote 780 °C po dobu 45 minút v atmosféře vzduchu. Získal sa praženec s obsahom 0,1 % hmotnosti selénu, 13,1 % hmotnosti médi, 0,94 % hmotnosti niklu a 7,69 % hmotnosti striebra. Účinnost odpraženia selénu bola 95,4 % a zachytený úlet obsahoval 57,2 % hmotnosti selénu. Praženec sa luhoval v roztoku s obsahom 190,5 g kyseliny sírovej v litri destilovanej vody pri hmotnostnom pomere kvapalnej fázy k pevnej rovnom 3 :1, teplote 74 °C a době lúhovania 3 hodiny. Účinnost vylúhovania bola 95,8 % médi a 82 % niklu. Získaný lúženec sa tavil v grafitovom kelímku s přísadou 20 percent hmotnosti sódy a 10 % hmotnosti koksu z hmotnosti vsádzky pod vrstvou drveného koksu. Získala sa kovová zliatina s obsahom 11,8 % hmotnosti striebra a troska obsahovala 0,0067 % hmotnosti striebra.Anode slurry of 2.14% by weight of selenium, 10.8% by weight of medium, 0.82% by weight of nickel and 6.24% by weight of silver was roasted at 780 ° C for 45 minutes in an air atmosphere. Roast was obtained containing 0.1% by weight of selenium, 13.1% by weight of medium, 0.94% by weight of nickel and 7.69% by weight of silver. Selenium depletion efficiency was 95.4% and the entrapped containment contained 57.2% selenium by weight. The roast was leached in a solution containing 190.5 g of sulfuric acid per liter of distilled water at a liquid to solid ratio of 3: 1, a temperature of 74 ° C and a leaching time of 3 hours. The leaching efficiency was 95.8% medium and 82% nickel. The obtained chord was melted in a graphite crucible with the addition of 20 percent by weight of soda and 10% by weight of coke from the weight of the batch under the layer of crushed coke. A metal alloy was obtained with a content of 11.8% by weight of silver and the slag contained 0.0067% by weight of silver.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS826256A CS243759B1 (en) | 1982-08-27 | 1982-08-27 | Process for processing anode sludge containing selenium, medium, nickel, silver and gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS826256A CS243759B1 (en) | 1982-08-27 | 1982-08-27 | Process for processing anode sludge containing selenium, medium, nickel, silver and gold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS625682A1 CS625682A1 (en) | 1985-09-17 |
| CS243759B1 true CS243759B1 (en) | 1986-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS826256A CS243759B1 (en) | 1982-08-27 | 1982-08-27 | Process for processing anode sludge containing selenium, medium, nickel, silver and gold |
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|---|---|
| CS (1) | CS243759B1 (en) |
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1982
- 1982-08-27 CS CS826256A patent/CS243759B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS625682A1 (en) | 1985-09-17 |
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