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Nails are made of keratin, a fibrous structural protein. It is also a key component of hair and the outside layer of skin.

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Why does the petroleum industry consist of so many different types of processes?

The petroleum industry consists of so many different types of processes because so many different things can be made from petroleum.


Are the fumes from a condensing combi boiler poisonous?

The fumes from a condensing combi boiler primarily consist of carbon dioxide and water vapor, which are not poisonous in typical concentrations. However, if the boiler is not functioning properly or if there is a flue blockage, it can produce carbon monoxide, a toxic gas that is dangerous and potentially lethal. It's essential to ensure proper installation, regular maintenance, and adequate ventilation to prevent any risks associated with gas appliances. Installing a carbon monoxide detector is also recommended for added safety.


What causes clinker formation in boiler?

Clinkers, also known as slag, consist of the noncombustible elements and minerals found in coal that melt and fuse together as lumpy ashes from coal combustion. Boiler operators consider clinkers to be miserable stuff


What are seal pots?

Oh, dude, seal pots are like these containers that are used in pumps to collect any leakage from the pump shaft seal. They help prevent the leakage from spilling all over the place and causing a mess. So yeah, they're basically like the pump's way of saying, "Oops, my bad, let me catch that for you."


How can i construct refractory castable?

Construction of Refractory CastableDuring the construction of refractory castable, special attention should be paid on pin welding, asphalt brushing, stirring of castable with water, making and fixing of mould, vibration and ramming of refractory castable, demoulding, sizes' and measuring points' accuracy, etc. Do construction strictly as material manufacturer and boiler works required.1. Installation of Pin and Claw NailsReinstall the pins missing for any reason and the pins in the area of heating surface composite melding junction before hydraulic pressure. Lengthen and reinstall the pins properly in coal mouth, material return mouth and upper inflection point of air duct furnace so that meets the required density of pins. Brush all the pre-buried metal parts and claw nails with asphalt paint (thickness > 1mm) or cover them with combustibles before casting.2. Dosing and Stirring of Castable & WaterThe dosing of refractory castable and water should be done strictly as the instructions of material manufacturer. The water should be clean, such as drinking water, ph 6-8. The mixer should be clean forced action mixer, and clean it for the next time using. Pay attention on the adding order of castable and water and its stirring time, adding water freely and prolonging of stirring time are forbidden. The water and refractory castable should be mixed evenly and stirred till smooth. Carry away the mixed casatble immediately after stirring, the castable poured out from stirring tank is disallowed to be poured into the tank and stirred again. Clean the tank after every construction for the next using, record the amount of water and refractory castable, and the stirring time.3. Checking Before Making TemplateCheck carefully whether the pin, hook nail and strutting part conform to the drawing, whether all the re-welding and is done and firm, whether the temporary metal parts have been cut off. Check whether the metal parts which should be brushed with asphalt paint meet the requirement, whether the casting place is clean, any other unrelated materials are forbidden to appear. For easy demoulding, a thin tier of partition (such as used oil) can be brushed in the mould. There can not be gaps between each two templates to avoid castable leaking out, so that also convenient for mould releasing. The refractory castable should be used up in 30 minutes after stirring, and should be casted to the required thickness in 1 time. Ram the castable till tight. For the too thick parts, cast tier by tier, while casting the upper tier, vibration bar can not touch the lower casted tier.