001A强酸性树脂吸附硫脲金的研究

Experimental Study on the Absorption of Gold Thiourea Complex Using 001 A Strong Acid Resin

研究了强酸性苯乙烯系阳离子交换树脂００１－Ａ在ｐＨ＝ ２．０的Ｈ２ＳＯ４－ ＣＳ（ＮＨ２）２－ Ｈ２Ｏ２ 体系中，吸附、富集硫脲金的性能。结果表明，该树脂对硫脲金离子Ａｕ（Ｔｕ）＋２ （Ｔｕ＝ 硫脲）具有吸附率高，吸附容量大等优异性能。Ａｕ 负载柱可用Ｎａ２Ｓ２Ｏ３ 溶液定量洗脱，用过的树脂可再生。

Scientists of different countries have been investigating new method of solving Au from mines by using thiourea. How to absorb gold thiourea complex is the key technique for the new method to be used in industry. We present a method of absorbing Au (I) thiourea complex by 001 A strong acid resin. Such a method, to our best knowledge, has not been reported in the open literatures. Section 1 describes the experiment carried out in H 2SO 4-CS(NH 2) 2-H 2O 2. Experimental results show that: (1) The static saturated absorption capacity of resin is 63.25 mg/g(resin) (Fig.1). (2) The absorption capacity of the resin reaches maximum when pH of the solution is 2.0 (Fig.3). (3) The elution capacity reaches maximum when the concentration of Na 2S 2O 3 is 1.00(mol/L). (4) The resin can be used for many times.