It's not satisfied with the convertional PID control because of the frequent fluctuation of the pulp consistency resulting from the high nonlinearity of the mineral grinding process and the random disturbances,hence, a neural network PID controllor is designed to control the pulp consistency.

It s not satisfied with the convertional PID control because of the frequent fluctuation of the pulp consistency resulting from the high nonlinearity of the mineral grinding process and the random disturbances,hence, a neural network PID controllor is designed to control the pulp consistency.

There is statistical fluctuation of measurement value when the ore pulp density is measured on-line with radiation.

Experiment study taken for finding out basic method for reduction of ash content in flotation concentrate for some plant,which are: lowering down of pulp density,increasing contact time of collector and reagent addition by steps;realized thereof that,on ensuring relative high concentrate yield,its ash content reduced by three percent points.

When pulp density was 2%,the mixed culture showed good bioleaching efficiency at 45 and 50 ℃,the copper extraction efficiency was 75.

The carbonation depth of alkali-activated slag cement mortars decreases with content of alkali equivalent increasing in the range of 3% to 6%.