The invention relates to a low-
cement refractory castable for pumping construction, which comprises a dry material and an additive, the dry material comprises the following components in parts by weight: 55-68 parts of
refractory aggregate, 12-27 parts of
refractory powder, 3-10 parts of superfine
powder and 1-9 parts of binding agent, the additive comprises fibers and a composite additive, the weight of the fibers is 0.01-3% of the weight of the dry material, the weight of the composite additive is 0.1-0.5% of the weight of the dry material, and the weight of the water is 5-12% of the weight of the dry material. The invention provides the low-
cement refractory castable with the
volume density of 2.2-2.8 g / cm3, the castable makes up the defect that the traditional low-
cement refractory castable cannot be pumped, realizes the pumping of the low-cement refractory castable, is convenient for on-site pouring construction, solves the difficult problem of vertical conveying of the refractory castable of a high and large furnace body, reduces the
workload of workers, and improves the pouring efficiency; and the stirred material reaches the working surface within a short time, so that the working surface can be prevented from being added with water again, and the performance of the refractory lining is effectively ensured.