Based on the RH-TB vacuum decarburization mechanism, and combined the production practice of smelting control on deep decarburization of IF steel in the second steel work of ANSHAN Iron and Steel Co. , operational parameters of ultra-low carbon steel smelting and the measures of preventing the liquid steel carbureted were determined accordingly.
This paper deals with increasing the availability and automatic control level of 385m2 kelly filter further by utilizing PLC control technology, associating with the characteristic of PLC technology and the electrical interlocking property of 385 m2 kelly filter, under the condition of operation practice。
Three categories of PAM-containing wastewater in production practice have been treated with the COD removal ratios being 87.5%, 82.4% and 84.7% respectively.
The content and conclusion of this paper have consulting significance and practicable value for our setting down relational criterion and production practice.
This approach is able to contribute to the reduction of product cost, improving product quality and shortening lead time, compared to the sequential approach in the normal engineering and production practice.
In order to meet the requirement of production practice, the authors present two simple quick determination methods, IR lamp method and hydrogen peroxide solution method.
Additionally, for a farm adopting a no-tillage production practice, an above-average expenditure was made on fertilizer.