3 results about "Chloride levels" patented technology

The present application belongs to the technical field of detection method, and particularly relates to a method for determining chlorides in reforming catalysts. The method comprises the following steps: burning the pretreated reforming catalyst sample to be determined to obtain a burned sample, adding water to extract the sample to obtain a chlorides extract, and determining the content of chlorides in the extract by silver nitrate titration. The temperature of the burning treatment is 600±25 DEG C, and the time is 1-3 hours. The present application discards the step of using magnesium chips / powder, which is an explosive hazardous material, in the traditional method, simplifies the sample pretreatment process, shortens the analysis time from 7 hours to 4 hours, eliminates the influence of wet base by calculating the mass fraction of alumina dry base and participating in the calculation of the content of chlorides, and improves the detection accuracy. The present application is safe, efficient, accurate and low in cost, and is suitable for monitoring chlorides in the whole life cycle of reforming catalysts in the petrochemical industry.

The present invention relates to a method for the reduction of the total alkali content of solid feedstocks employing mild temperature aqueous leaching in the presence of a leaching agent of formula XO and / or X(OH)? wherein X is an alkaline earth metal. The invention further relates to the solid material having reduced total alkali content obtainable from the method. The invention further relates to uses of the solid material, for example as a filler. The invention further relates to compositions comprising the solid material and a further material selected from the group consisting of asphalt, cement, geopolymers, polymers and combinations thereof. The invention further relates to a method for preparing concrete.

This disclosure pertains to a process and circuit for producing enhanced manganese-zinc filter cake compositions, and more specifically to a wash process and circuit that produces manganese concentrations of 36-45 wt. % and zinc concentrations of 15-17 wt. % while lowering chloride content to below 3 wt. %. The process and circuit involve sequential washing, drying, repulping, and dewatering of polymetallic filter cakes derived from saline feedstocks, facilitating effective downstream recovery of refined manganese and zinc products.