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杜笙离子交换树脂,杜笙螯合树脂,杜笙吸金树脂,杜笙抛光树脂,杜笙除磷树脂,杜...

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进口杜笙金矿金回收废电子金回收吸金树脂
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产品: 浏览次数:27进口杜笙金矿金回收废电子金回收吸金树脂 
品牌: 杜笙
单价: 90.00元/升
最小起订量: 1 升
供货总量: 100000000 升
发货期限: 自买家付款之日起 3 天内发货
有效期至: 长期有效
最后更新: 2015-07-30 12:00
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详细信息
 金回收: 使用TULSION? 杜笙离子交换树脂从化物溶液中回收金.
Gold Recovery : From cyanide liquor USING TULSION? ION EXCHANGE RESIN.
简介/ INTRODUCTION :
传统上使用活性碳吸附金子。珍贵的金会被活性碳吸附于表面,再藉由洗涤或直接焚烧以回收金。
Conventionally activated carbon is used for extracting the gold from the mother liquor coonly contacted with beds of activated-carbon. The precious noble metal loaded on the activated carbon is recovered by elution or sily by incineration of the carrier at teerature.
使用离子交换树脂回收贵金属比活性碳还具有多方面的优势, 因为藉由特殊制造过程中, 我们可以在其结构上的有效能基上置入具有选择性的离子,以选择性的吸附此贵重金属。
Ion exchange resins are more versatile substrates than activated carbons can be used, because specific functional groups can be afixed on the resin matrix, for better selecivity, during the synthe. These resin can be tailor-made to irove the gold carrier features such as selecivity, retance to poisoning by calcium or organic materials and loading capacity.
因此, 由于具有经济考虑优势, 离子交换树脂普遍被使用于贵金属回收。而大部份使用阴离子交换树脂来交换吸附贵金属。
Therefore the ion exchange resins are economically adopted for the gold recovery. Mostly Anionic type of ion exchange resin are used that adsorb the gold.
用化物萃取金的过程中, 金会以阴离子的化金型式存在, 既Au(CN)2- ; 再经由强或弱的阴离子交换树脂交换回收。如Tulsion?A-23(强),Tulsion?A-27(强)及Tulsion?A-2X (弱) 。
The gold extracted by cyanidation is in the form of anionic aurocyanide colex Au(CN)2 - and can be recovered from the pregnant solution by ionic exchange with strong or we base anion exchange resin ,such as Tulsion?A-23,Tulsion? A-27 an Tulsion?A-2X
(a) 强离子交换树脂方面的应用:
此型的强型阴离子树脂具有四级的能基,在高pH 值的溶液中,藉由交换离子的相反离子来吸附Au(CN)2
- ; 其反应机构如下:
(a) STRONG base ANION:
These resins contain quaternary aonium functionality which, when contacted with the pH leachate stream, adsorb the aurocyanide anion via exchange for the resin's chloride counter-ion:
XxxNR3 *X Au(CN)2 xxx NR3 * Au(CN)2 X
再藉由更强的阴离子树脂或是用其它的化学反应, 将吸附的金洗涤出。通常最经济实惠的替代反应是用化锌或是用代盐将金洗出, 如下:
Elution of the adsorbed gold colex can be accolished by displacement with a more strongly adsorbed anion or by chemical reaction. Coetitive displacement is typically done with either zinc cyanide or thiocyanate:
XxxNR3*Au(CN)2 SCN xxxNR3*SCN Au(CN)2
XxxNR3*Au(CN)2 Zn(CN)42 [xxxNR3*]2 Zn(CN)4 2 Au(CN)2
不管以上是用何种方法洗涤出金错化物,此强型阴离子树脂最终都必须用或铁将其转换回盐型式,以利下一次的金吸附的反应机构模式。其回复的反应机构如下:
In either case, the resin must then be converted back to the sulfate form prior to return to adsorption service, typically with sulfuric acid or ferric sulfate. however, the preferred method of elution is by chemical reaction with thiourea:
XxxNR3*Au(CN)2 SC(NH2)2 2H2SO4 xxxNR3*HSO4 2 HCN
[ Au {SC(NH2)2}2] HSO4-
b) 弱型阴离子交换树脂的应用:
另一种是用弱型的阴离子交换树脂。由于此弱型的阴离子树脂都是以**基型式存在, 所以必须先用处理之后, 再用来吸附金。其反应机构如下:
b) WE base ANION:
An alternative aroach to the above is the use of we base anion exchange resins which, because they are normally sulied in the "free base" form, need to be treated with acid prior to contact with the leachate stream. A typical cycle is conceptually as follows:
XxxNR2 HX xxxNR2H*X-.
XxxNR2 H X Au(CN)2 XxxNR2 H Au(CN)2 XXxxNR2
H Au(CN)2 NaOH XxxNR2 Na Au(CN)2 H2O
因为弱型阴离子的高交换容量及可以得到较高的处理量, 于小型的操作系统模式, 通常都会用焚烧来取代洗涤的方式来回收金。
Because of the capacity ailable with ion exchange resins and the loading that can therefore be oained, in most all scale operations it is often an option to consider incineration of the loaded resin rather than elution.
通常弱型阴离子交换树脂最被常用于此贵金属回收。
Coonly the We base anion ion exchange resins are used for this alication
建议杜笙/ Tulsion?离子交换树脂型号:
RECCOMENDED TULSION PRODUCT :
若需,请与我们联系:
产品/ PRODUCT 型式/ TYPE
Tulsion? A-23 AU 强凝胶型阴离子具有四级能基
A strong base gel-type resin containing quaternary-amine functional groups
Tulsion? A-27 强巨孔型阴离子具有四级能基
A strong base macro porous resin containing quaternary-amine functional groups
Tulsion? A-2X S 弱巨孔型阴离子具有四级能基
A we base macro porous resin containing tertiary amine functional group
 
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