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利用相对误差≤15%的高压辐射粘度计测量了花岗质熔体与含水氯化物流体相互作用时的粘度.实验条件是:T=900-1250℃,P_(流体)=50-400MPa;溶液:1摩尔HCl;0.2摩尔HCl_1;0.2摩尔NaCl.在这样的条件下,给流体加入氯离子,熔体发生去碱作用(优先离解出铁和碱),是使含水花岗质熔体的粘度(η)和粘性流动活化能(E)显著提高的基本原因.实际上,由于这种影响跟加入的氯离子的存在形式(酸或盐)无关.因而,P_(流体)和熔体内水的浓度上升,这种影响就要减弱.对于任意成分的流体,粘度与温度之间,都成指数关系,而指数前因子的值恒定不变,对于与含水氯化物流体相接触而成分固定的熔体来说,由于压力上升,P_(总压)>P_(流体),其流变学参数(η·E)不变.
The viscosities of the granite melt and the aqueous chloride fluid were measured using a high-pressure radiation viscometer with a relative error of ≤15%. The experimental conditions were: T = 900-1250 ° C, P_ (fluid) = 50-400 MPa; solution : 1 mole of HCl; 0.2 moles of HCl 1; 0.2 moles of NaCl. Under such conditions, chloride ions are added to the fluid and the melt undergoes dealkalization (preferentially iron and alkali dissociation), which is such that the viscosity of the aqueous granulated melt (η) and viscous flow activation energy (E) .In fact, since this effect is not related to the presence of chloride ion (acid or salt), P_ (fluid) and in-melt water , The effect will be weakened.For any composition of the fluid viscosity between the temperature, are exponential relationship, while the exponential factor constant value, with the contact with the aqueous chloride fluid and the composition of a fixed For the melt, due to the pressure increase, the P_ (total pressure)> P_ (fluid), the rheological parameters (η · E) remain unchanged.