高浓度粘稠物料加压旋转流变仪的研制与标定

高浓度粘稠物料(如原生煤泥、造纸污泥等一类工业副产品或固体废弃物)流变特性的测定在其管道输送系统的设计中有重要意义。这种粘稠物料若无添加剂作用在常压下是一种分散结团物料,不具备流体特性,无法采用一般旋转流变仪对其流变特性进行测试。因此研制出一种新型加压旋转流变仪(最高压力20MPa),将物料封闭加压,维持管道输送时的工况,保持其流体形态,从而达到物料加压流变特性测试的目的。该仪器的标定与使用结果表明其达到了设计要求,数据采集方便,测量自动化程度较高。

DESIGN AND CALIBRATION FOR HIGH-PRESSURE ROTATIONAL RHEOMETER OF HIGH VISCOUS AND DENSE MATERIAL

The rheological measurement of high viscous mat-erial(such as original coal slurry, city sludge, paper pulp and such industrial byproducts or solid waste) has important significance in the project of pipeline transportation of these matter. Under normal pressure and without adding additives, viscous and dense material with high concentration is a kind of separate agglomerate material without characteristic of fluid. If using common rotational rheometer, it is impossible to test the rheological characteristic. However, under high pressure, viscous and dense material with high concentration will become conti- nuous slurry with characteristic of fluid. So a new sort of highpressure rotational rheometer of high viscous material (maximum operating condition is 20 MPa) is researched and manufactured. The structure and the process of calibration are reported. After the test of calibration and use, the device can well fit for measuring the viscosity of high viscous material. It is superior in the degree of the automatization and facile in the automatic collection of data.