Abstract: The present disclosure relates to an efficient biodegradable dust suppressant for an open-pit mine and a preparation method therefor. The dust suppressant includes the following components in percentage by weight: 2%-3.5% of gallic acid, 1.5%-2% of sodium alginate, 0.25%-2% of a surfactant, 0.5%-1% of an antifreeze liquid, and balance water. The preparation method includes the following steps: (1) preparing the gallic acid; (2) preparing the antifreeze liquid; (3) weighing the components in parts by weight; (4) mixing the gallic acid, water, sodium alginate and antifreeze liquid; (5) adding the surfactant; and (6) adding the balance water to prepare the efficient biodegradable dust suppressant for an open-pit mine. The present disclosure has the characteristics of low temperature resistance, high temperature resistance, bonding, wetting, coal dust consolidation and the like, is biodegradable, and does not cause secondary pollution.

Abstract: The present disclosure relates to an efficient biodegradable dust suppressant for an open-pit mine and a preparation method therefor. The dust suppressant includes the following components in percentage by weight: 2%-3.5% of gallic acid, 1.5%-2% of sodium alginate, 0.25%-2% of a surfactant, 0.5%-1% of an antifreeze liquid, and balance water. The preparation method includes the following steps: (1) preparing the gallic acid; (2) preparing the antifreeze liquid; (3) weighing the components in parts by weight; (4) mixing the gallic acid, water, sodium alginate and antifreeze liquid; (5) adding the surfactant; and (6) adding the balance water to prepare the efficient biodegradable dust suppressant for an open-pit mine. The present disclosure has the characteristics of low temperature resistance, high temperature resistance, bonding, wetting, coal dust consolidation and the like, is biodegradable, and does not cause secondary pollution.

Abstract: A method and an apparatus for invoking an application programming interface (API) are disclosed. The method includes: loading a prestored JS file to a webpage after loading of the webpage is completed; receiving an invoking request that is sent by the webpage by invoking the JS file; and invoking a corresponding API according to a JS URL. This solves a problem that an encoded URL in each webpage needs to be modified when an encoding rule of a URL in a specified format is changed, which is complicated in operation, wastes time, and is poor in compatibility with clients in different versions.

Abstract: A method and an apparatus for invoking an application programming interface (API) are disclosed. The method includes: loading a prestored JS file to a webpage after loading of the webpage is completed; receiving an invoking request that is sent by the webpage by invoking the JS file; and invoking a corresponding API according to a JS URL. This solves a problem that an encoded URL in each webpage needs to be modified when an encoding rule of a URL in a specified format is changed, which is complicated in operation, wastes time, and is poor in compatibility with clients in different versions.