54 results about "Pine oil" patented technology

The invention discloses an acid soil improvement type organic fertilizer and a preparation method thereof, and belongs to the technical field of microorganisms. The organic fertilizer is prepared from chicken manure, urea, a microbial agent, nicotine biochar, a synergist, silicon-calcium powder, biochemical potassium fulvate, alkaline residues, a modifier, turpentine and plant ash. The nicotine biochar is synergized by using a synergist, the alkaline residues are subjected to hydrophobic selective modification by using a modifier, and the alkaline residues, the microbial agent, biochemical potassium fulvate, silicon-calcium powder and plant ash synergistically play a role in improving the acid soil. The modified nicotine biochar contains a large amount of nicotine, and has strong heavy metal adsorbability and enhanced fertilizer efficiency under the action of a synergist; after the alkaline residues are modified by the modifier, the structure is decomposed into fine fragments, the degree of generating precipitates by aluminum ions and alkaline substances in the alkaline residues is promoted, after hydrophobic treatment, aluminum precipitates are more stable, aluminum toxicity can be effectively relieved, meanwhile, the slow release performance is achieved, acid soil is improved, and fertility is provided for the acid soil.

The utility model discloses a cracking kettle for preparing sebacic acid by cracking castor oil. The device is characterized in that a cracking kettle body is divided into an upper-layer kettle and a lower-layer kettle, and the upper-layer kettle and the lower-layer kettle are separated by a separation plate; a plurality of gas dispersion channels are distributed on the isolation plate; the gas dispersion channel is made of a non-sticky high-temperature-resistant material, the gas dispersion channel is a bevel channel, and the inlet end and the outlet end are symmetrically arranged up and down; a feeding channel is arranged above the cracking kettle body, an internal channel is arranged at the top in the cracking kettle body, a through hole is formed in the isolation plate, and the internal channel penetrates through the through hole of the isolation plate and is communicated with the lower-layer kettle; the feeding channel penetrates into the cracking kettle body and is communicated with the internal channel; the inner channel is a double-layer pipeline, the inner space is a stirring rod channel, and the outer space is a feed liquid channel; the stirring rod penetrates through the stirring rod channel and extends into the lower-layer kettle; the stirring paddle is spirally arranged at the lower end of the stirring rod. The gas outlet can be protected, the gas outlet is prevented from being blocked by non-gas products, and smooth output of the gas products is guaranteed.

The invention relates to the technical field of daily chemical raw materials, and particularly discloses a soothing essential oil composition containing honeysuckle flower oil as well as a preparation method and application thereof. The soothing essential oil composition containing the honeysuckle flower oil is prepared by compounding the honeysuckle flower oil, schisandra chinensis oil, michelia alba flower oil, cypress oil, guaiacol, bergamot oil, green orange oil and spikenard oil. The traditional Chinese medicine composition has the advantage that the effect of relieving the emotion is quicker.

The invention belongs to the technical field of mineral separation processes, and particularly relates to a novel gravity-flotation combined process tailing discarding process. According to the method, the coastal placer tailings are scrubbed, so that slime and impurities wrapping the outer layers of mineral particles can be removed, the fresh surfaces of the mineral particles are exposed, and the effect of a flotation reagent on the mineral particles is improved; sodium carbonate and water glass are used as regulators; oleic acid and sodium oleate are used as collecting agents; terpenic oil is used as a foaming agent for size mixing, and full release of the effect of a flotation reagent is facilitated; and in addition, the flotation operation mode of two-time roughing, three-time scavenging and three-time concentration and reselection are combined, so that the recovery rate of useful minerals in the coastal placer tailings is greatly increased, and the waste of resources is reduced.

The present invention relates to a herbicide formulation based on pine oil. The present invention also relates to a method of reducing unwanted vegetation in a soil environment and a method for reducing seed viability using the herbicide formulation. The herbicide formulation comprises a pine oil, a tall oil, and an alkali. The formulation has improved herbicidal properties, and is less subject to coagulation at low ambient temperatures.

The application provides a preparation process of Miaogukanghuoluo oil and belongs to the technical field of medicinal oil production. The process comprises the following steps: S1, preparing raw materials with a certain weight ratio: Sanqi 3.5%-4%, Chuanqiong 4.5%-5%, wintergreen oil 5%-6%, menthol 7.5%-8%; S2, after Sanqi and Chuanqiong are processed and qualified, they are poured into a feeding pipe together with menthol, camphor and borneol, a rotating assembly is used to crush and pulverize the medicinal raw materials, and the crushed medicinal powder is fully mixed; S3, a user pours wintergreen oil, pine oil, clove oil and Shancang oil into the bottom of the installation shell through an oil inlet pipe in proportion, so that the medicinal oil mixture is prevented from adhering to the surface of the stirring assembly and causing medicinal waste; S4, the fully mixed medicinal oil mixture is placed and bottled to obtain Miaogukanghuoluo oil. The rotating assembly is arranged to prevent solid particles from affecting the overall medicinal effect of the huoluo oil, and the stirring assembly is arranged to further improve the mixing effect of the medicinal powder and medicinal oil.

The application provides a high-efficiency foaming agent suitable for argillaceous porphyry copper ore in high-cold regions and a preparation method and application thereof. The high-efficiency foaming agent suitable for argillaceous porphyry copper ore in high-cold regions is composed of mixed alcohols, pine oil, sulfur-nitrogen esters, diesel oil, xanthate and a surfactant. The high-efficiency foaming agent suitable for argillaceous porphyry copper ore in high-cold regions is simple in preparation method, does not produce intermediate products, has low irritation, is friendly to the environment, has low dosage of the medicament compared with traditional single foaming agent, has stable foam properties, and can also assist in collecting some chalcopyrite, molybdenite and other sulfide ores. Within the range of the component allocation, the foaming agent can fully exert the synergistic effect of each component. In a high-altitude environment (altitude >= 3500m), the foaming capacity and foaming rate of the foaming agent are obviously superior to those of traditional foaming agents.

The present invention belongs to the technical field of solid waste resource utilization, and particularly relates to a method for acidolysis coupling flotation to whiten phosphogypsum. The present invention pulverizes and disperses the phosphogypsum aggregates to release impurities such as slime and organic matter on the surface of gypsum crystals; sodium dodecyl glycinate is compounded with pine oil alcohol, and at the same time a foaming agent is added to effectively remove impurities such as slime, organic matter and siliceous minerals; by superimposing an acidolysis solution with a persulfate auxiliary agent, the present invention can not only improve the liquid-phase water activity, effectively release impurities such as eutectic phosphorus in the gypsum lattice, but also effectively promote the dissolution of insoluble impurities in the aqueous solution; according to the precipitation saturation index, the present invention regulates the liquid-phase pH to 8-9 to convert the residual soluble phosphorus and soluble fluorine in the liquid phase into insoluble calcium phosphate and calcium fluoride inert substances; the present invention compounded dodecyl trimethyl ammonium chloride with tetradecylamine can effectively adsorb the negatively charged gypsum crystals through electrostatic attraction.

The invention provides a copper-lead-zinc-antimony sulfide ore flotation foaming agent and a preparation method and application thereof, and belongs to the technical field of mineral flotation preparation synthesis. The foaming agent for mineral flotation is obtained by mixing 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and ethylene glycol according to a specific proportion, fully stirring and standing. The mineral flotation foaming agent prepared in the invention has the advantages of good flotation index, high concentrate grade and low unit consumption compared with the domestic common foaming agent pine oil and terpenic oil, and has the advantages of low use cost, wide raw material source and equivalent flotation index compared with the foreign common foaming agent methyl amyl alcohol. The foaming agent provided by the invention is wide in source and low in price, and can be suitable for flotation of sulphide ores of metals such as copper, lead, zinc and antimony with relatively high content of easily-argillized gangue.

This invention discloses a low-temperature resistant composite flotation reagent for coal preparation and its preparation method, specifically relating to the field of flotation technology. The reagent is formed by emulsification of a composite collector, a composite frother, and an aqueous phase. The composite collector contains kerosene, n-dodecane, oleic acid, dimer acid, surfactant components, and low-temperature stabilizing components. The composite frother contains terpineol, pine oil, sec-octanol, and sodium α-olefin sulfonate, etc. Through compounding and synergistic effects, high-speed shear emulsification, and high-pressure homogenization, the obtained reagent exhibits good dispersibility and stability at -5 to 15°C, and can improve the flotation efficiency, clean coal yield, and combustible gas recovery rate of fine coal slime and high-ash, difficult-to-separate coal slime without heating the coal slurry.

This utility model provides a pine resin heat-insulating and anti-clogging conveying pipeline, relating to the technical field of pine resin conveying devices. It includes a main pipe, which comprises a liquid inlet section, a narrowing section, a throat section, an expanding section, and a liquid outlet section, connected end-to-end and fixed to each other. The narrowing section has a truncated conical structure, with the inner diameter of its input end being the same as that of the liquid inlet section, and the inner diameter of its output end being the same as that of the throat section. A heating mechanism is fixedly installed on the outer wall of the throat section, and an insulation pipe is fixedly installed on the outer sleeve of the main pipe. Through the variable diameter structure of narrowing for acceleration and expanding for flow stabilization, the flow state of the resin is actively optimized. After entering the throat section, the kinetic energy of the resin is significantly increased, breaking the laminar flow state and eliminating the stagnant zone at the pipe wall boundary, preventing impurities from depositing. Combined with precise local heating in the throat section, replacing full-line heating, energy consumption is significantly reduced. The external insulation pipe further suppresses heat loss, effectively solving the pipeline blockage problem caused by temperature decreases during long-distance transport, significantly improving production continuity and reducing maintenance costs.

This invention proposes a method for improving the quality of pyrite concentrate powder recovered from cyanide tailings, belonging to the field of slag resource utilization technology. The method includes: mixing raw cyanide tailings ore with water to form a cyanide tailings slurry; filtering the slurry through a fixed mesh screen to remove sand and gravel impurities; and conveying the slurry to an activation tank; adding concentrated sulfuric acid to the activation tank to convert cyanide ions into hydrogen cyanide gas, followed by the addition of alkali solution, a collector, and pine oil to obtain a slurry; agitating and aerating the slurry, causing FeS2-containing slurry particles to float to the surface and be scraped off; continuing agitation and aeration to enrich and purify the FeS2-containing slurry particles; further enrichment and purification followed by scraping off the FeS2 slurry particles to recover the FeS2 slurry particles, yielding concentrate and tailings slurries respectively; the concentrate and tailings slurries undergo solid-liquid separation under the action of a slurry pump, followed by pressure filtration; the filtrate is collected and discharged into a workshop circulating water tank for reuse; after unloading, the concentrate and tailings are collected separately. This invention produces high-quality pyrite concentrate powder with an FeS2 content of approximately 90%.

The present invention relates to the technical field of deodorant, disclose a kind of plant deodorant and preparation method thereof, its raw material includes 10-20 parts of plant essential oil, 1-3 parts of pinene, 1-3 parts of sabinene, 1-3 parts of linalool, 1-3 parts of myrcene, 1-3 parts of α-terpineol, 5-8 parts of polyethylene glycol monooleate, 2-5 parts of preservative, 5-10 parts of core-shell nano microspheres, 70-80 parts of deionized water by weight; the core-shell nano microspheres are prepared by using nano zinc oxide particles as core layer and trivalent iron ions as shell layer. In the present invention, plant deodorant not only contains active ingredients reacting with odor molecules, but also converts malodorous substances into odorless substances, effectively improves deodorization efficiency, and purifies the environment; and the compounding of plant essential oil and spices makes the fragrance more fresh and natural, and can also improve the persistence of fragrance retention, and achieve the effect of efficient and rapid deodorization.

The invention provides a composition of grass ear shaft essential oil and an extraction method of the grass ear shaft essential oil. A steam distillation method is adopted to extract the amomum tsao-ko spike stalk essential oil from crushed amomum tsao-ko spike stalks, when fresh amomum tsao-ko spike stalks are adopted to extract the amomum tsao-ko spike stalk essential oil, the mass ratio of the amomum tsao-ko spike stalks to water is 1: 1-1: 4, and the amomum tsao-ko spike stalks and water can be directly subjected to steam distillation after being mixed and can also be soaked for 30-60 minutes; when the dry amomum tsao-ko spike stalks are used for extracting the amomum tsao-ko spike stalks, the mass ratio of the amomum tsao-ko spike stalks to water is 1: 8-1: 10, the amomum tsao-ko spike stalks need to be soaked for 30-90 minutes, and then steam distillation is performed; the steam distillation time is 2-5 hours; when the fresh amomum tsao-ko spike stalks are used for extracting the amomum tsao-ko spike stalk essential oil, the oil yield is 0.03%-0.15%; when the extract is used for extracting the amomum tsao-ko spike stalk essential oil from the amomum tsao-ko spike stalk, the oil yield is 0.24-0.96%. The amomum tsao-ko spike-stalk essential oil is prepared from the following main components: 1, 8-cineole, beta-pinene, trans-nerolidol, alpha-pinene, linalool, beta-cineole, delta-junifolene, limonene, neraldehyde, alpha-terpilenol and ocimene.

The application discloses a medicine composition for treating abdominal distension of children and a preparation method of the medicine composition. The medicine composition mainly comprises components of immature bitter orange fruit, thick poria, clove, cassia bark, fried Semen Raphani and pine oil.

The present invention provides a medical waste disinfectant and a preparation method and a use method thereof, and relates to the field of disinfection technology. The medical waste disinfectant comprises: actinomycin D with a mass fraction of 0.01-0.05%, dodecyl dimethyl benzyl ammonium chloride with a mass fraction of 0.05-0.1%, didodecyl dimethyl ammonium chloride with a mass fraction of 0.01-0.05%, sodium nitrite with a mass fraction of 0.4-0.6%, isopropanol with a mass fraction of 0.05-0.1%, pine oil with a mass fraction of 0.01-0.05%, and the pH of the disinfectant is 6.8-7.2. The disinfectant can effectively sterilize medical waste, has low corrosivity to equipment, and has low product toxicity.

This application provides a flotation frother for copper-lead-zinc-antimony sulfide ores, its preparation method, and its application, belonging to the field of mineral flotation reagent synthesis technology. This application obtains a mineral flotation frother by mixing dodecyl alcohol ester and ethylene glycol in a specific ratio, followed by thorough stirring and settling. Compared with commonly used domestic frothers such as pine oil and pine alcohol oil, the mineral flotation frother prepared in this application has better flotation indicators, higher concentrate grade, and lower unit consumption. Compared with commonly used foreign frothers such as methyl pentanol, it has lower usage costs, wider raw material sources, and comparable flotation indicators. The frother provided in this application is widely available and inexpensive, and is suitable for the flotation of copper-lead-zinc-antimony and other metallic sulfide ores with high content of easily mud-forming gangue.

The invention discloses a saline-alkali adsorber for simulating a plant leaf surface function by using corncobs as well as a manufacturing method and a using method of the saline-alkali adsorber, and belongs to the technical field of saline-alkali land treatment. The adsorption conveying part is composed of a hollow reed stem section and charcoal powder filled in the reed stem section, the leaf surface-imitating evaporation part is composed of a corncob section subjected to surface hydrophobic treatment, and one end of the reed stem section is fixedly inserted into one end of the corncob section. The manufacturing method comprises the steps of raw material preparation, corncob surface functionalization treatment and assembly, the corncob surface functionalization treatment sequentially comprises the steps of drying carbonization and pine oil fumigation treatment, layered hydrophobic treatment and cooling cracking treatment, and finally a functional surface with a hydrophobic area and a microcosmic breathing channel is formed on the surface of the corncob. When in use, the adsorber is inserted into soil, under the driving of solar energy, salt-containing water is continuously extracted from the soil, and salt is intercepted and enriched in corncobs. The soil salinization can be effectively treated by utilizing agricultural wastes, and the method has a wide application prospect.

The invention discloses an environment-friendly multifunctional herbicide and a preparation method thereof. The environment-friendly multifunctional herbicide comprises red oil and / or acid water separated during synthesis of 1, 8-terpin from turpentine; the red oil is pinene and isomerization or addition byproducts thereof, and comprises one or more of tricyclene, camphene, carene, limonene, cymene, terpinene, isoterpinene, phellandrene, 1, 4-cineole, 1, 8-cineole, fenchene, fenchol, isoborneol, borneol, 4-terpilenol, beta-terpilenol, alpha-terpilenol and gamma-terpilenol. Compared with turpentine, the herbicide has a broad-spectrum and efficient killing effect and also has killing and repelling effects on pests, and meanwhile, the compounds are easy to naturally degrade in the environment and are non-toxic to human.

The invention discloses a method for enriching trace cobalt in ultra-low vanadium titano-magnetite iron ore concentrate, and belongs to the technical field of metallurgy. The invention provides a separation and enrichment method for enriching trace cobalt elements in ultralow-grade vanadium titano-magnetite iron concentrate, which comprises the following steps: by taking ultralow-grade vanadium titano-magnetite iron concentrate with the cobalt content of 0.01-0.03% as a raw material, grinding, dehydrating and drying; then carrying out oxidizing roasting at 890-905 DEG C; water is added into the roasted product for size mixing, and the pH is adjusted to 10-11; flotation is carried out with sodium sulfide as a vulcanizing agent, amyl xanthate as a collecting agent, terpenic oil as a foaming agent and water glass as an inhibitor, and cobalt rough concentrate is obtained; and amyl xanthate and terpenic oil are supplemented, fine selection and purification are carried out, and cobalt concentrate is obtained. According to the method, the high-grade cobalt concentrate is enriched from the ultralow-grade iron concentrate, the cobalt grade is 17-20%, and the recovery rate is 80-90%.

The invention discloses a processing method for improving carbon black dispersion of a butylbenzene tread, and relates to the field of butadiene styrene rubber mixing processing, and the processing method comprises the following steps: S1, mixing rubber, carbon black, an anti-aging agent, resin, a softening agent and an activating agent to prepare a section of master batch; s2, mixing the first-stage rubber master batch with a plasticizer to prepare second-stage rubber master batch; s3, mixing the second-stage rubber master batch with sulfur, an accelerant and a scorch retarder to prepare final mixed rubber; the plasticizer comprises a pine oil plasticizer; the contents of the rubber, the carbon black and the plasticizer are 80-100 parts by mass, 55-70 parts by mass and 3-15 parts by mass respectively. Part or all of the pine oil plasticizer is added after being delayed to the second-stage rubber master batch stage, so that the pine oil plasticizer is prevented from being directly contacted with the high-reinforcing carbon black in the first-stage mixing and powder feeding stage to form an aggregate, and the carbon black is fully dispersed firstly; therefore, the purpose of preventing poor dispersity of the carbon black and reduction of physical properties of the rubber material caused by the fact that the plasticizer-carbon black viscous aggregate consumes a large amount of shear force is achieved.

The quantitative filling platform comprises a base, an oil storage tank is fixedly connected to the top of the base, a metering pump is fixedly installed on the base, a supporting frame is installed on the base, one side of the supporting frame is fixedly connected with the oil storage tank, and the other side of the supporting frame is fixedly connected with the oil storage tank. The input end of the metering pump is fixedly connected with the oil storage tank through a pipeline. The movable frame is started to drive the connecting valve head to vertically move until the connecting valve head is aligned with the butt joint opening, then the connecting valve head is pulled to be guided out along the interior of the movable frame to be in butt joint with the butt joint opening of a vehicle, then the metering pump is started to pump out high-purity turpentine in an oil storage tank for quantitative filling, and the metering pump automatically stops after filling is conducted to a specified amount. And then the connecting valve head is separated from the vehicle body butt-joint port to complete filling, so that the device has the advantages that the device is in hard connection with the vehicle butt-joint port, the filling pressure is increased, the filling efficiency is improved, the connection stability is better, and the device is not prone to falling off.

The application relates to the technical field of asphalt materials, and particularly discloses a road paving asphalt filler and a preparation process thereof. The road paving asphalt filler comprises the following components in parts by mass: 3-4 parts of asphalt, 91-99 parts of aggregate, 1-1.3 parts of composite oil and 9-12 parts of composite filler. The composite oil is a compound of wood wax oil, perilla seed oil and pine oil. The preparation process of the road paving asphalt filler comprises the following steps: step 1), heating and mixing the asphalt and the composite oil to obtain a premix; and step 2), adding the aggregate and the composite filler into the premix and uniformly mixing to obtain the road paving asphalt filler. The application has the advantages that the road paving asphalt filler has improved crack resistance at low temperatures.

The invention discloses a method for simultaneously determining the content of multiple active ingredients in borneol camphor essential oil, wherein the multiple active ingredients are α-terpineol, camphor, p-cymene, myrcene, limonene, α-pinene; borneol camphor essential oil is analyzed by high performance liquid chromatography, and the chromatographic conditions are: using octadecylsilane bonded silica gel as a filler; using a specific mobile phase gradient elution program; flow rate: 1mL / min; column temperature: 35°C; injection solvent is 10μL; detection wavelength selection program is: 0.00min-50.00min selects 208nm. The present invention respectively carries out a linear relationship investigation, stability test, precision test, reproducibility test and sample recovery test to verify the method, proving that this analytical method is accurate and reliable.

A drought-resistant water-saving material for planting on two sides of deserts, lands, roads and railways belongs to the field of drought-resistant water-saving materials, is prepared by processing aeolian sand and pine oil products, the raw materials are all from the nature, the processing method is simple, and the drought-resistant water-saving material has waterproof, anti-seepage and breathable functions, controls sand with sand, does not pollute the deserts and the lands, can be repeatedly used, resists drought and saves water, and turns waste into wealth. And the method can be used for planting in desert reservoir building, reservoir building for fish culture, wind prevention and sand fixation on two sides of land and roads, and the like.

The invention discloses an easily degummed turpentine-based adhesive as well as a preparation method and application thereof, and the easily degummed turpentine-based adhesive is prepared by reaction of 4, 5-epoxyhexane-1, 2-dicarboxylic acid diglycidyl ester and alkane diamine. A topological structure with a covalent cross-linked network and dynamic transesterification is constructed through 4, 5-epoxyhexane-1, 2-dicarboxylic acid diglycidyl ester and alkane diamine, a tertiary amine group in the material can spontaneously catalyze the transesterification reaction of beta-hydroxyl ester, and network reconstruction is achieved; excellent mechanical performance and thermal performance are realized; excellent stability, including wide temperature range adaptability, heat and humidity resistance and chemical corrosion resistance, is shown in an extreme environment; meanwhile, the adhesive has high adhesion strength to various metal and non-metal base materials; during dismounting, mechanical violent force or strong chemical solvents are not needed, and the device cannot be damaged; the required raw materials are simple, preparation is simple, cost is low, and popularization is easy.

The multistage fractionating tower comprises a tower body, the left side of the tower body is communicated with an air inlet pipe, the left side of the tower body is fixedly connected with a sealing cover, the left side of the sealing cover is communicated with a guide pipe, and the left side of the tower body is fixedly connected with a sealing block. The sealing block is arranged on the air inlet pipe in a sleeving mode and fixedly connected with the air inlet pipe, the inner wall of the sealing cover is rotationally connected with a rotating disc, the right side of the rotating disc makes contact with the sealing block, and annularly-distributed filtering plates are embedded in the rotating disc. According to the utility model, when turpentine steam enters the tower body, the turpentine steam is firstly filtered, so that the situation that dust and impurities are accumulated in the tower body to influence the efficiency of a filler or a tower plate is effectively avoided, the self-cleaning of the filtering structure can be realized, and the cost of maintaining the filtering mechanism by a user is reduced.

The embodiment of the present disclosure provides a brazing method and composite filler of aluminum nitride ceramic and oxygen-free copper, and relates to the technical field of electronic packaging. The method comprises the following steps: putting silver-copper-titanium filler and niobium powder into a ball mill tank and performing ball milling with alcohol as a dispersion medium to obtain a filler suspension; drying the filler suspension to obtain a composite filler; adding ethyl cellulose into a mixed solvent formed by pine oil and diethylene glycol butyl ether acetate to obtain a mixed solution by heating and dissolving; adding hydrogenated castor oil and fatty alcohol polyoxyethylene ether into the mixed solution in sequence, and heating to dissolve to obtain a uniform adhesive for solder paste; stirring the composite filler and the adhesive for solder paste to obtain a composite filler solder paste; coating the composite filler solder paste on a bonding area of the aluminum nitride ceramic; and performing brazing on the aluminum nitride ceramic coated with the composite filler solder paste and stacked with an oxygen-free copper foil. The present disclosure can improve the peeling strength of the aluminum nitride ceramic and the oxygen-free copper connection and improve the welding quality.

The invention relates to the field of environmental protection chemistry, and discloses a limonene-based natural deodorant and a preparation method thereof, the limonene-based natural deodorant comprises the following components by weight: 60-70% of limonene, 20-30% of refined pine oil, 3-5% of cedar oil, 3-5% of edible alcohol, 0.05-0.1% of an antioxidant, 1-2% of citric acid, and 0.05-5% of an activator; the preparation method comprises a three-step mixing mode. Compared with a deodorant in the prior art, the natural deodorant based on limonene prepared by the invention is more efficient in deodorization effect, meanwhile, the effective component limonene is more stable and long-acting, and the three technical bottleneck defects of the limonene deodorant exposed in an actual garbage treatment scene are overcome.

Discloses a combined depressant for sphalerite flotation separation and its application, the combined depressant including reducing substance and anthocyanin. It is used as a combined depressant for sphalerite in the flotation separation of chalcopyrite and sphalerite or galena and sphalerite. After crushing and grinding the raw ore, the combined collector and foaming agent are added to the ore pulp for copper-zinc or lead-zinc flotation. During the copper-zinc or lead-zinc separation process, the combined depressant is added as the sphalerite depressant, isopentyl xanthate is used as the collector of chalcopyrite or galena, pine oil is used as the foaming agent, the froth product is copper concentrate or lead concentrate, and the bottom product is zinc concentrate. The combined depressant of the disclosure has a strong inhibitory effect on sphalerite and can effectively achieve flotation separation of chalcopyrite and sphalerite or galena and sphalerite.