Based on the mathematical simulation by ASPEN PLUS,the energy-saving technology in diesel hydrogenation unit lay-up re-boiling furnace was studied.

Application of fluidized-bed furnace in 100 kt/a S-NPK fertilizer plant;

Process design of fluidized bed roaster in Jiangtong-Wengfu's 400 kt/a pyrite-based sulphuric acid plant;

Revamping of slag tapping and transportation system for sulphuric acid fluidized bed roaster;

Design of fluidized bed roaster of a 100 kt/a sulphuric acid plant;

Conceiving of Fluidized Bed Furnace Reformed from 35T Spreader-Stoker Boiler;

The current drying modification is on coal instead of diesel oil for fluidized bed furnace with high efficiency and low dust (GXDF), which results in annual more than 20 million RMB Yuan from cost saving of drying DAP, as well as stable appearance, colour and high class DAP product.

It is the key of the automatic ore feed control system for fluidized bed furnace in ore based acid plant to maintain good control of the dynamic balance between the air (O 2) intake and ore (FeS 2) feed of the fluidized bed furnace, the air/ore ratio, and to maintain a weak oxidizing atmosphere in the furnace.

In accordance with the problem of high sulfur content in dust produced by 30?m 2 fluid-bed furnace of 40 kt/a sulfuric acid system,suggustion of mixing high zinc slag into zinc concentrate was put forward to recovery high zinc slay,reduce impurity of roasted ore and improve benefit.

Due to a few blast caps of 30m 2 fluid-bed furnace,resulting in low feed rate of concentrates and bad result of desulfur,after increasing numbers of bast caps,wind power was raised,output and quality of sinters were obviously improuved.