Marquette Cement Manufacturing Co.

Marquette Cement Manufacturing Co. 






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Article from the Portsmouth Daily Times, Sept. 17, 1960 {Transcribed below}

“Marquette’s New Plant a Modern Feat”

Cement Firm Uses Unusual Method to ‘Pour’ Construction

Portsmouth Daily Times, Sept. 17, 1960

By L.W. Burns, Industry and Labor Editor

Concrete work on the giant storage silos of the Marquette Cement Mfg. Co. plant at Superior, Ohio, 22 miles northeast of Portsmouth, is complete.

Marquette is building a new cement production plant at Superior and hopes to have the new facilities in operation next summer.

The old plant continues in operation while the new facilities are being constructed.

Cement manufacture is one of Southern Ohio’s diversified industries. Marquette employs about 175, including 160 production and maintenance workers. The plant operates around the clock, seven days a week.

A fleet of trucks and railway cars is kept busy hauling cement from the plant to consumers. Most of the cement is delivered in bulk by truck or train although Marquette bags cement for smaller consumers.

More than 4,000 cubic yard of Marquette cement and concrete went into construction of the silos.

The slip-form pouring method was used. The silos were built in one continuous pour which required more than eight 24-hour days to complete.

Reinforcing steel was erected and a wooden form, four feet high, was built around the steel work. As the pour progressed, the entire form was raised an inch at a time. Hydraulic jacks were used to raise the forms.

As the weather approached freezing, the form was encased in plastic for protection of the concrete and the workers. Electric heating units and some oil burners were installed in the enclosure.

Portsmouth Mixed Concrete Co. set up a portable concrete mixing plant on the construction site. Cement was supplied from the Marquette plant. Aggregate was hauled to the mixer.

Five trucks were kept busy around the clock hauling concrete from the mixer to the silos. Nine silos were built as one unit. They are 90 feet high and each has a diameter of 40 feet. The silos will store raw materials, including pulverized limestone, slate, iron, silica, alumina and gypsum, the ingredients of Portland cement.

A giant kiln is being constructed as the heart of the new production plant. The kiln will be 425 feet long and is being erected on concrete piers, on a slope.

Raw materials will be blown from the silos into the high end of the silos. The kiln coal fire will be at the low end. Fans will blow the heat through the tunnel. The tunnel will rotate on rollers, mixing the ingredients as it turns. The kiln temperature is about 2,800 degrees. As the materials burn and the kiln rotates, the finished product rolls through the tunnel and out the lower end. It is blown to huge storage silos at the shipping department nearby.

Marquette obtains the limestone and shale from its nearby quarries. It employs strip mining using a powerful electric shovel to clear the overburden, strip the stone and lead it onto trucks.

Trucks haul the stone to the grinding mills located on a hillside overlooking the new plant facilities. A conveyor transports the crushed stone to the storage silos.

Five old rotary kilns of small capacity will be discontinued when the new kiln goes into operation.

The steel shell of the kiln was built in Milwaukee. The exterior diameter of the top section is ___ feet. It was built in sections ranging from 33 to 77 feet long. It required special railway cars and special routing to move the kiln sections to the plant site. The interior of the kiln will be lined with refractory brick.

Since Marquette acquired the plant from the former Superior Cement Corp. in 1954 it has spent several million dollars on a complete modernization program. The plant supplies cement in Southern and Central Ohio, Northern Kentucky and West Virginia. It is one of 10 modern cement making plants owned by Marquette. The plants employ many residents of Scioto County.

John L. Dolbey of Ashland, Ky., is plant superintendent, Maxon Construction Co. of Dayton, Ohio, and Klug & Smith Construction Co. of Milwaukee are the major contractors on the project.