And these results of some main conditions from carrier flotation have been compared, the results show that the recovery of fine grained gold have been increased by applying sulphonating kerosene as a subsidiary collector,at the same time, it also decrease the consumptions of xanthate and No.

Adsorption effects of sulphonated coal for heavy metal ions;

Study on property characterization of sulphonated coal and its application in biodiesel industry;

An experimental study was made on the method of preparing sulphonated coal.

The preparation methods of sulfonated coal and factors such as sulfonation time, sulfonation temperature and ratio of acid to coal etc.

This paper presents experimental studies on the treatment of picric acid wastewater by using sulfonated coal sorption-micrbelectrolysis-biochemical process.

The lignite to sulfonated coal technology was studied in this paper.

The influences of different sulfonated lignite as compatible material on quality estimation of sulfomethyl phenol formaldehyde resin(SMP) were analyzed by experiments.