同心圆筒法测定磷铵料浆的导热系数

Measurement of the Thermal Conductivity of Acidic Ammonium Phosphate Slurry by a Coaxial Cylinder Technique

用同心圆筒法测定了酸性磷铵料浆溶液的导热系数。采用含P2O5 23.682%的试剂稀磷酸与气氨中和得到中和度分别为0.1841、0.4074、0.5947、0.8297、0.9456的酸性磷铵料浆，并加热浓缩到20.337%-70.208%的含水量。测定了60℃、75℃、90℃下不同浓度的料浆溶液的导热系数。结果表明，料浆溶液的导热系数随温度的升高、含水量的增大和中和度的增大而增大。

Using a coaxial cylinder technique, the thermal conductivities of the slurries with neutralization degrees of 0.1841、0。4047、0。5947、0。8297、0。9456 and different water contents ranging from 20.337%to 70.208% were measured at temperature of 60℃、75℃、90℃. The experimental results indicate that the thermal conductivity of the slurry increases with increasing of temperature、water contents and neutralization degree.