5results about How to "Avoid preprocessing" patented technology

The invention discloses a method for preparing a mine filling cementitious material by using cyanide tailings, comprising the following steps: weighing dried cyanide tailings, secondary aluminum ash, barium slag and phosphogypsum in proportion, and putting them into a tank mixer for mixing; after uniform mixing, adding sodium hydroxide solution for wetting, and using a tablet press to press the powder into a cubic green body, and placing the green body in an oven for drying without overlapping; putting the dried green body into a high-temperature box-type muffle furnace for calcining; adding phosphogypsum into the calcined clinker phase, crushing the green body, and sending the green body into a ball mill for ball milling treatment to obtain a cementitious material, and using tailings as aggregates, and supplemented with a polycarboxylic acid water reducer, and adding water to prepare a cementitious material for mine filling; the invention uses cyanide tailings as raw materials, and combines industrial solid wastes such as barium slag, secondary aluminum ash and phosphogypsum, and adopts a one-step activation method to prepare a cementitious material, which can simultaneously complete the decyanation and detoxification of the tailings and the activation of the tailings, has a simple process flow, and the prepared filling material has a fast hydration and hardening rate, good fluidity and high mechanical strength.

The invention discloses an ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) method for determining the content of cerium in aviation gear steel. The method comprises the following steps: setting working parameters of an inductively coupled plasma emission spectrometer; determining the blank solution and the cerium standard solutions under different concentrations by using an inductively coupled plasma emission spectrometer, and drawing a cerium element concentration standard curve; determining a to-be-determined sample solution by using the inductively coupled plasma emission spectrometer, and then determining the content of the cerium element in the to-be-determined solution by combining the cerium element concentration standard curve. According to the method, the content of the cerium element in the aviation gear steel is accurately measured, meanwhile, it is guaranteed that other elements are accurately measured, no element loss is generated, and compared with a steel mill test result, a sulfuric acid-phosphoric acid fuming method, a perchloric acid fuming method and a spectrophotometric method, the difference is small, precision is high, and accuracy and reliability are achieved.

The present application relates to the field of geophysics, in particular to a network user-oriented GNSS velocity field product visualization and interactive analysis method and system, which solves the problems of poor interaction flexibility, insufficient dynamic presentation effect, difficult multi-source data fusion and low deployment convenience of traditional technology in GNSS velocity field visualization. The present application efficiently caches multi-source data through the global singleton mode of the data management layer, realizes real-time capture and distribution of instructions in the interface layer and the interaction control layer, completes velocity field projection decomposition and quantitative calculation by using the core computing layer, forms a visual closed loop by combining the dynamic rendering of the visualization presentation layer, and converts the achievements into a standardized format for local saving by the result output layer. By constructing a high-interactive and lightweight analysis platform, the present application significantly improves the interactive flexibility and deployment convenience of GNSS velocity field visualization analysis.

The present application relates to a heavy metal detection system. The light source module and the signal processing module are arranged on the top of the shell; the test box is fixed on the oscillation module and faces the light source module; the oscillation module is arranged in the shell; the heavy metal detection sensors are uniformly arranged on the bottom and the side wall of the test box; the control module is used for controlling the oscillation module to oscillate for a set time when the concentration values detected by the multiple heavy metal detection sensors are inconsistent, until the concentration values detected by the multiple heavy metal detection sensors are consistent, and judging whether the detected concentration value exceeds the set value; the control module is also used for controlling the light source module to emit light sources with different pulse widths into the test box when the concentration values detected by the multiple heavy metal detection sensors are consistent and the concentration value exceeds the set value, and determining the type of heavy metal pollution according to the spectral characteristics determined by the signal processing module. The present application can improve the detection efficiency and accuracy.

The invention discloses a water body nitrate concentration high-frequency monitoring method and system based on water surface hyperspectral data, and the method comprises the following steps: arranging a hyperspectrometer on the surface of a monitored water body for continuous monitoring, and obtaining water body spectral absorbance data; regularly collecting a water sample on site, and measuring the nitrate nitrogen concentration of the water sample; matching the spectral absorbance data with the nitrate nitrogen data, and establishing a sample data set; training a PLS model by using the data set, and constructing a nitrate nitrogen inversion model; and the established inversion model is combined with a hyperspectrometer to realize automatic long-time high-frequency monitoring of nitrate nitrogen.