CN101793637B - Test method of alloy gold containing gold and silver and platinum group metal - Google Patents
Test method of alloy gold containing gold and silver and platinum group metal Download PDFInfo
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- CN101793637B CN101793637B CN2009101726607A CN200910172660A CN101793637B CN 101793637 B CN101793637 B CN 101793637B CN 2009101726607 A CN2009101726607 A CN 2009101726607A CN 200910172660 A CN200910172660 A CN 200910172660A CN 101793637 B CN101793637 B CN 101793637B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention belongs to the field of smelting technology and in particular to a test method of alloy gold containing gold and silver and platinum group metal; the test method comprises the following steps: whether the surface of the alloy gold has obvious protruded lump and whether the surface color is consistent are determined; batch charging is carried out for smelting according to the standard with no more than 3.5kg, and the smelting temperature is 1250-1300 DEG C and is insulated for 8-10min; lumpy refractory matter in melted liquid state material or material with poor fusant mobility is separated; a sample for test is taken out by standing before casting is carried out, the remaining material is poured into a mold and then is smelted continuously, so as to separate out the lumpy refractory matter in the melted liquid state material or material with poor fusant mobility, and the remaining part is smelted gold material which is qualified by test; the test method can intercept theplatinum group metal in the gold smelting and test link, so as to avoid interference of the platinum group metal to the gold electro-refining production, shorten the production period, simplify the production process and have high intercepting rate.
Description
(1) technical field
The invention belongs to technical field of smelting, particularly a kind of acceptance method that contains gold and silver and platinum group metal gold containing material.
(2) background technology
Common domestic gold refining industry is checked and accepted in the gold raw material process of platinum group metal in fusing, finds that platinum group metal and gold and silver easily form the infusibility gold containing material, seriously disturb the gold raw material to melt examination normally.Platinum group metal fusing point height, than great, fusing back forms the infusibility gold containing material and is deposited in crucible bottom, therefore can not form the equally distributed gold containing material of component with gold and silver, causes the fusing institute sample thief can't be representative.National standard method as existing use: gold content national standard method " TB/G15249.1-1994 " in the gold containing material is measured in fiery ensaying, just have serious the interference when mensuration contains golden in gold and silver and the platinum group metal gold containing material, wherein the content of platinum group metal is used as gold content and calculates.If in fact the platinum group metal enters electrolytic purification technology, not only can influence the quality of finished product gold, and casting can form the infusibility gold containing material during positive plate, cause a large amount of gold and silver to overstock, thereby make complex treatment processization, production cost further improves.
At present domestic acceptance method to platinum group metal gold raw material is not found report as yet, and the industry way is to propose the platinum group metal in the earth of positive pole that electrorefining produces, and when perhaps casting Jinyang pole plate the infusibility gold containing material is told otherwise processed.But still there is following shortcoming in it: gold content can not accurately be measured in the platinum group metal gold raw material, and in a single day the platinum group metal enters production link and will cause infusibility gold containing material separation difficulty, production cost improves, and a large amount of gold and silver overstock, and make gold refining enterprise be absorbed in the production and operation difficulty.
(3) summary of the invention
The object of the present invention is to provide a kind of acceptance method that contains gold and silver and platinum group metal gold containing material, the platinum group metal is tackled in gold gold containing material raw material fusing examination link, thereby the production cycle is shortened in the interference of avoiding the platinum group metal that the gold electrorefining is produced, simplifies production technology.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of acceptance method that contains gold and silver and platinum group metal gold containing material may further comprise the steps:
1) determine the gold containing material surface whether have obviously outstanding block, whether surface color consistent, noting abnormalities to be defined as the key monitoring object;
2) according to the standard that at every turn the is not more than 3.5Kg fusing that feeds intake, temperature of fusion is 1250 ℃-1300 ℃, keeps 8-10min, and described being molten into adopts the oxygen-acetylene cutting torch to melt;
3) separate for the material that occurs block refractory compound or fluidity of molten difference in the liquid material after the fusing;
4) leave standstill earlier and get sample for test before the casting, sampling back leftover materials are slowly poured mold cools down into the thread of diameter 2-3mm and are become ingot, stop die casting during the surplus melting materials capable 2Kg of crucible, continue fusing at crucible, isolate the block refractory compound that occurs in the liquid material or the material of fluidity of molten difference, remainder is the gold material of fusing acceptance(check);
Above-described gold containing material gross weight should be not more than 8Kg.
If described gold containing material gross weight is more than the 8Kg, then described method is further comprising the steps of before definite key monitoring object:
Adopt intermediate frequency furnace 1250-1300 ℃ of fully fusing according to the standard that does not exceed 45Kg at every turn with graphite crucible, left standstill after the fusing 10 seconds, the preceding sampling of casting, leftover materials gradation block-by-block in sampling back is that 6 millimeters thread pours into mold cools down and becomes ingot with diameter, use material in the oxygen-acetylene cutting torch heating crucible simultaneously, wait to have cast and shake crucible next piece of casting again behind the every ingot gently, be deposited in the infusibility gold containing material that crucible bottom is the sticky shape of block or mobile difference if there is the platinum group metal to form, isolate this part and get final product; When the casting clout is no more than 2Kg, stop die casting, add silica crucible, observe, determine the key monitoring object afterwards with the heating of oxygen-acetylene cutting torch.No. 30 graphite crucibles of general employing, if adopt the crucible of other model, the amount of the material that can at every turn add according to the particular capacity adjustment of crucible.
For taking a sample before the above-described casting, can use national standard method " GB/T15249.1994-1 " to measure the content of gold in the gold containing material earlier, there is micro-platinum group metal to disturb as finding, then adopt ferrous sulphate potentiometric determination gold content wherein.
In the physical property of the gold and silver that described gold containing material contained and the noble metals such as platinum group metal that may contain, separately density and fusing point are as follows:
The density of gold is 19.32g/cm3, and fusing point is 1063 ℃; The density of silver is 10.49g/cm3, and fusing point is 961 ℃; The density of platinum is 21.45g/cm3, and fusing point is 1770 ℃; The density of iridium is 22.65g/cm3, and fusing point is 2454 ℃; The density of osmium is 22.61g/cm3, and fusing point is 3027 ℃; The density of palladium is 12.02g/cm3, and fusing point is 1550 ℃; The density of rhodium is 12.41g/cm3, and fusing point is 1966 ℃; Ruthenium density be 12.45g/cm3, fusing point is 2427 ℃.
From as can be known above, the fusing point of gold and silver and platinum group metal and density difference are bigger, this has just determined the gold raw material of platinum group metal can be divided into two states in molten condition, melt top is gold and silver and other base metal melt, and the platinum group metal is deposited in the melt bottom owing to the fusing point height, than great and part gold and silver formation infusibility gold containing material, and we can make the platinum group metal separated in the fusing course of receiving by this physical characteristics of utilization platinum group metal.
Method of the present invention can be checked and accepted the platinum group metal and than the gold raw material of gold and silver fusing point height, heavy other metals, adopt the inventive method, platinum group metal more than 99% is blocked in the fusing course of receiving, has avoided the influence of platinum group metal golden purification preparation technique.Through facts have proved, the platinum group metal is blocked the rate height in the course of receiving, efficiently solves noble metal and overstocks, and shortens the problem of production technology.In this way, in the gold raw material fusing course of receiving, can tackle infusibility gold containing material 30Kg every year.Send the expensive inspection center of platinum industry company limited of grinding in Kunming, Yunnan to analyze its result following (%) the infusibility gold containing material sampling of interception: gold 63.50, platinum 0.02, iridium 25.37, ruthenium 11.67.Small investment of the present invention, instant effect suits to simplify golden purifying technique to various gold refining business enterprise expand, shortens the process-cycle, obtains better economic benefit.
The present invention has following advantage with respect to prior art:
Acceptance method of the present invention can be tackled the platinum group metal in the gold fusing and check and accept link, thereby the production cycle is shortened in the interference of avoiding the platinum group metal that the gold electrorefining is produced, simplifies production technology; Interception rate height.
(4) description of drawings
Fig. 1 is the process flow diagram of technology of the present invention.
(5) embodiment:
Below with specific embodiment technical scheme of the present invention is described, but protection scope of the present invention is not limited thereto:
Embodiment 1
A kind of acceptance method that contains gold and silver and platinum group metal gold containing material, gold material heavily are 6.5Kg, check and accept and adopt the fusing of oxygen-acetylene cutting torch to check and accept:
Whether have obviously outstanding bulk, whether surface color is consistent if (1) examining the material surface, noting abnormalities to be defined as the key monitoring object, will pay much attention to when fusing is checked and accepted, and operates meticulously;
(2) each fusing must not feed intake and exceeded 3.5Kg, exceeds the 3.5Kg graded and checks and accepts, and adheres to the principle of " thread at a slow speed, " when guaranteeing the casting of fusing back;
(3) the material melting temperature keeps 1250 ℃-1300 ℃, and the time keeps 10min, examines liquid material after the fusing of platinum group metal gold raw material, occurs that block refractory compound or fluidity of molten are poor, viscosity is big, should be judged as the platinum group metal and exist;
(4) leave standstill earlier before the casting and get sample for test a moment, the thread that the back leftover materials of sampling are 2-3mm with the diameter is slowly poured mold cools down into and is become ingot, the mixed melting material of forbidding block not fusant and mobile difference enters mould (perhaps directly separating), continue fusing and observe the platinum group metalliferous material, pour another mould behind the accuracy of judgement into, cooling back otherwise processed;
(5) for the gold material, sample for test of fusing acceptance(check) marking together, the treatment surface oxidation impurities enters the program of checking the weight; Return the client by oneself for the platinum group metal gold raw material that detects;
(6), adopt the wherein content of gold of ferrous sulphate potentiometric determination for containing micro-platinum group metal gold containing material sample.
Embodiment 2
The gold material heavily is 16Kg, adopt the intermediate frequency furnace fusing with graphite crucible (No. 30), the gold material fully left standstill 10 seconds after the fusing at 1250 ℃-1300 ℃, the preceding sampling of casting, sampling back leftover materials are that 6 millimeters thread pours into mold cools down and becomes ingot with diameter, use material in the oxygen-acetylene cutting torch heating crucible simultaneously, wait to have cast and shake crucible next piece of casting again behind the every ingot gently.Pour preprepared silica crucible during clout 2Kg into, continue to observe with the heating of oxygen-acetylene cutting torch, following operation steps is with the step among the embodiment 1.
Embodiment 3
The gold material heavily is 60Kg, adopts No. 30 graphite crucible; Except want gradation fusing (can according to each 30Kg) in the first step, other are with embodiment 2.
Claims (2)
1. an acceptance method that contains gold and silver and platinum group metal gold containing material is characterized in that, may further comprise the steps:
1) determine the gold containing material surface whether have obviously outstanding block, whether surface color consistent, noting abnormalities to be defined as the key monitoring object;
2) according to the standard that at every turn the is not more than 3.5Kg fusing that feeds intake, temperature of fusion is 1250 ℃-1300 ℃, keeps 8-10min, and described being molten into adopts the oxygen-acetylene cutting torch to melt;
3) separate for the block refractory compound that occurs in the liquid material after the fusing or the material of fluidity of molten difference;
4) leave standstill earlier and get sample for test before the casting, sampling back leftover materials are slowly poured mold cools down into the thread of diameter 2-3mm and are become ingot, stop die casting during the surplus melting materials capable 2Kg of crucible, continue fusing at crucible, isolate the block refractory compound that occurs in the liquid material or the material of fluidity of molten difference, remainder is the gold material of fusing acceptance(check);
Above-described gold containing material gross weight should be not more than 8Kg.
2. an acceptance method that contains gold and silver and platinum group metal gold containing material is characterized in that, described gold containing material gross weight is more than the 8Kg, to may further comprise the steps:
1) adopt intermediate frequency furnace 1250-1300 ℃ of fully fusing according to the standard that does not exceed 45Kg at every turn with graphite crucible, left standstill after the fusing 10 seconds, the preceding sampling of casting, leftover materials gradation block-by-block in sampling back is that 6 millimeters thread pours into mold cools down and becomes ingot with diameter, use material in the oxygen-acetylene cutting torch heating crucible simultaneously, wait to have cast and shake crucible next piece of casting again behind the every ingot gently, be deposited in the infusibility gold containing material that crucible bottom is the sticky shape of block or mobile difference if there is the platinum group metal to form, isolate this part and get final product; When the casting clout is no more than 2Kg, stop die casting, add silica crucible, observe with the heating of oxygen-acetylene cutting torch;
2) determine the gold containing material surface whether have obviously outstanding block, whether surface color consistent, noting abnormalities to be defined as the key monitoring object;
3) according to the standard that at every turn the is not more than 3.5Kg fusing that feeds intake, temperature of fusion is 1250 ℃-1300 ℃, keeps 8-10min, and described being molten into adopts the oxygen-acetylene cutting torch to melt;
4) separate for the block refractory compound that occurs in the liquid material after the fusing or the material of fluidity of molten difference;
5) leave standstill earlier and get sample for test before the casting, sampling back leftover materials are slowly poured mold cools down into the thread of diameter 2-3mm and are become ingot, stop die casting during the surplus melting materials capable 2Kg of crucible, continue fusing at crucible, isolate the block refractory compound that occurs in the liquid material or the material of fluidity of molten difference, remainder is the gold material of fusing acceptance(check).
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| CN2009101726607A CN101793637B (en) | 2009-11-20 | 2009-11-20 | Test method of alloy gold containing gold and silver and platinum group metal |
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| CN2009101726607A CN101793637B (en) | 2009-11-20 | 2009-11-20 | Test method of alloy gold containing gold and silver and platinum group metal |
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| CN101793637A CN101793637A (en) | 2010-08-04 |
| CN101793637B true CN101793637B (en) | 2011-06-01 |
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| MX2023002015A (en) | 2020-08-18 | 2023-04-11 | Enviro Metals Llc | Metal refinement. |
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Owner name: LINGBAO JINYUAN MINING CO., LTD. Free format text: FORMER NAME: LINGBAO CITY JINYUAN MINING CO., LTD. |
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Address after: 472500, Jincheng Road, Lingbao City, Henan, Sanmenxia 20 Patentee after: Lingbao Jinyuan Mining Co.,Ltd. Address before: 472500, Jincheng Road, Lingbao City, Henan Province, No. 20 Patentee before: Lingbao City Jinyuan Mining Co., Ltd. |