Low-temperature afterheat comprehensive utilizing system applied to integrated iron and steel works

The invention provides a low-temperature afterheat comprehensive utilizing system applied to integrated iron and steel works. The system comprises a low temperature heat source and a heating device; a pipeline system comprises a plurality of auxiliary branches, and each auxiliary branch comprises a first branch, a second branch, and a third branch which is directly connected with the low temperature heat source; the low temperature heat source is connected with a noncontact type heat exchanger through each first branch; a lithium bromide refrigerator is connected with the low temperature heat source through each second branch and then is connected with a circulating cooling tower through a pipeline; the heat temperature afterheat can be directly supplied to a user, or used for heating other mediums through the noncontact type heat exchanger or used for preparing low temperature cooling water through the lithium bromide refrigerator. With the adoption of the system, the low temperature afterheat can be efficiently utilized in all periods throughout the year, besides providing heat to a workshop and residents in the heat supply season.